ICON ITC-350 Tank Level Display Plus Controller Owner’s Manual

ITC-350 Tank Level Display Plus Controller

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Specifications

• Display: LED, 4 x 20mm High, Adjustable Color
  & Brightness

• Displayed Values: -999 to 9999

• Transmission Parameters: 1200 to 115200 bit/s,
  8N1 / 8N2

• Input Signal: 0-4-20mA, 0-10V, 0-150mV RTD,
  pH

• Standard Voltage: 85-260V AC/DC, 16-35V AC,
  19-50V DC

• Output Signal: Passive current output

• Accuracy: According to IEC 60770 – Limit Point
  Adjustment, Non-Linearity, Hysteresis, Repeatability

• Operating Temperatures: – Contact Factory for
  different options

• Materials (Wetted): Housing – NORYL

Product Usage Instructions

User Safety Guidelines

• Do not use the unit in areas threatened with excessive shocks,
  vibrations, dust, humidity, corrosive gases, and oils.

• Avoid using the unit in areas at risk of explosions or with
  significant temperature variations.

• The unit uses dangerous voltage; always switch it off and
  disconnect from power before troubleshooting.

• Avoid disassembling, repairing, or modifying the unit by
  yourself.

Device Installation

1. The unit is designed for mounting inside housings (control
   panel, switchboard) ensuring protection against surges and
   interference.

2. Metal housings must be grounded according to regulations.

FAQ

Q: What should I do if the unit malfunctions?

A: If there is a risk of serious threat to safety or property
due to a malfunction, use additional independent systems to prevent
the threat and contact an authorized service center for
repairs.

Q: Can I repair the unit myself if it’s defective?

A: No, do not attempt to repair or modify the unit yourself.
Disconnect defective units and submit them for repairs at an
authorized service center.

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller
Quick Start Manual

Read the user’s manual carefully before starting to use the unit or software. Producer reserves the right to implement changes without prior notice.

24-0352 © Icon Process Controls Ltd.

1

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Symbol Explanation
This symbol denotes especially important guidelines concerning the installation and operation of the device. Not complying with the guidelines denoted by this symbol may cause an accident, damage or equipment destruction.

Basic Requirements | User Safety
Do not use the unit in areas threatened with excessive shocks, vibrations, dust, humidity, corrosive gasses and oils.
Do not use the unit in areas where there is risk of explosions.
Do not use the unit in areas with significant temperature variations, exposure to condensation or ice.
The manufacturer is not responsible for any damages caused by inappropriate installation, not maintaining the proper environmental conditions and using the unit contrary to its assignment.
If in the case of a unit malfunction there is a risk of a serious threat to the safety of people or property additional, independent systems and solutions to prevent such a threat must be used.
The unit uses dangerous voltage that can cause a lethal accident. The unit must be switched off and disconnected from the power supply prior to starting installation of troubleshooting (in the case of malfunction).
Do not attempt to disassemble, repair or modify the unit yourself. The unit has no user serviceable parts.
Defective units must be disconnected and submitted for repairs at an authorized service center.

Specifications

General
Display Displayed Values Transmission Parameters

LED | 4 x 20mm High | Adjustable Color & Brightness -999 – 9999 1200…115200 bit/s, 8N1 / 8N2

Input Signal | Supply
Standard Voltage

Universal Input: 0 | 4-20mA | 0-10V | 0-150mV RTD | pH 85 – 260V AC/DC | 16 – 35V AC, 19 – 50V DC*

Output Signal | Supply
Standard Voltage Passive current output*

ITC450: 4 x Relays (5A) | 2 x Relays (5A) + 4-20mA · ITC350: 1 x Relay (5A) + 4-20mA 24VDC 4-20mA | (Operating Range Max. 2.8 – 24mA)

Performance

Accuracy

0.1% @ 25°C One Digit

Accuracy According to IEC 60770 – Limit Point Adjustment | Non-Linearity | Hysteresis | Repeatability

Temperatures
Operating Temperatures

-40 – 158°F | -40 – 70°C

Materials | Wetted
Housing

NORYL

*Contact Factory for different options

Model Selection

ITC 450 — Industrial Level Controller

ITC 350 — Industrial Level Controller

Part Number

Input

Output

Part Number

Input

Output

ITC 450-1121

4-20 mA

4 Relay

ITC 350-1119

4-20 mA

–

PC

ITC 450-1129

4-20 mA

4-20 mA + 2 Relay

ITC 350-1120

4-20 mA

4-20 mA + 1x (5A) Relay

24-0352 © Icon Process Controls Ltd.

2

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Features
Super `Sunbright’ LED Display
8 Levels of Brightness
ITC 450
4 Configurable (5 AMP) Relays

Rugged Panel Mount
Design

24VDC Power Supply
to Sensor

ENC-100 NEMA 4X Enclosure + ITC 450 Display (Optional)

LP100 Junction Box

4-20mA

AL R1 R2 R3 R4
R

ESC ENTER MENU

Push Button Programming

ITC 450 Display + ENC-100 Enclosure
(Optional)
100 Series Submersible Level Sensor

Optional Remote
1 Configurable (5A) Relay

ITC 350

Function of Push Buttons

Symbol used in the manual : [ESC/MENU] Functions: · Enter to main menu (press and hold for at least 3 sec.) · Exit the current Screen and Enter to previous menu (or measure mode) · Cancel the changes made in parameter being edited
Symbol used in the manual : [ENTER] Functions: · Start to edit the parameter · Enter into the sub-menu · Confirmation of changes made in parameter being edited

Symbol used in the manual : [ ] [ ] Functions: · Change of the present menu · Modification of the parameter value · Change of the display mode

24-0352 © Icon Process Controls Ltd.

3

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Device Installation

1. The unit is designed for mounting inside housings (control panel, switchboard) insuring appropriate protection against surges and interference. Metal housings must be connected to ground in a way that complies with the governing regulations.

2. Disconnect the power supply prior to starting assembly.

3. Check the connections are wired correctly prior to switching the unit on.

In order to install the unit, a 90.5 x 43 mm mounting hole (Figure A, B) must be prepared. The thickness of the material of which the panel is made must not exceed 5mm. When preparing the mounting hole take the grooves for catches located on both sides of the housing into consideration (Figure A, B). Place the unit in the mounting hole
inserting it from the front side of the panel, and then fix it using the brackets (Figure C). The minimum distances between the centre points of multiple units – due to the thermal and mechanical conditions of operation – are 115 mm x 67mm (Figure D).

90.5 mm

92mm

13mm 8mm

43mm

8mm 13mm

1mm

1mm

max. 5mm

Figure A. — Recommended mounting hole dimensions

92mm

max. 5mm
Figure B. — Allowable mounting hole dimensions 115mm

43mm

67mm

8.5mm 16mm

5mm

12mm 10mm

Figure C. Installing of brackets, and dimensions of connectors

Figure D. Minimum distances when assembly of a number of units

WIRE INSTALLATION
· Carefully remove wire terminal from socket · Loosen set screw · Insert wire · Tighten set screw · Replace wire terminal into socket
24-0352 © Icon Process Controls Ltd.

Due to possible significant interference in industrial installations, appropriate measures assuring correct operation of the unit must be applied.
The unit is not equipped with an internal fuse or power supply circuit breaker. For this reason, an external time-delay cut-out fuse with a small nominal current value must be used (recommended bipolar, max. 2A) and a power supply circuitbreaker located near the unit. In the case of using a monopolar fuse it must be mounted on the phase cable.
4

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Wiring Diagrams

All connections must be made while power supply is disconnected.

Power supply

R4 (optional)

(depending on version)

+24V +5%, -10%

RS – 485

Imax = 100mA GND DATA+

+ Uo –

DATA-

12

34

56789

10 11 12 13 14 15

31 32 33 34 35

31 34

;
+D

;
D 33 34

R1

R2

R3

(optional) (optional) (optional) RTD

RTD

mA

Figure E. — Terminals description (relay outputs)

+-
TC

Power

+24V +5%, -10% RS – 485

+ supply (optional) Imax = 100mA

GND DATA+

(depending on version) OC4

–

DATA

+-

12

34

56789

10 11 12 13 14 15
– +- +- + OC1 OC2 OC3 31
(optional) (optional) (optional)

31 32 33 34 35

34

mV V

33 34

OC1 ÷ OC4: Umax = 30V DC, Imax = 30mA, Pmax = 100mW

RTD

RTD

+-

mA

TC

Figure F. — Terminals description (OC-type outputs)

Power

ACTIVE

supply current output
(optional)

– (depending on version)

12

34

+24V +5%, -10% RS – 485

Imax = 100mA

GND

DATA+

+ Uo –

DATA

56789

10 11 12 13 14 15

31 32 33 34 35

ALML ALML
31 32

&
91

&

1

33 34

R1

R2

(optional) (optional)

RTD

RTD

+-

mA

TC

Figure G. — Terminals description (relay and active current outputs)

24-0352 © Icon Process Controls Ltd.

5

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Wiring Diagrams

All connections must be made while power supply is disconnected.

Power

ACTIVE

supply current output

(optional)

– (depending on version)

+24V +5%, -10%

RS- 485

Imax = 100mA GND DATA+

+ Uo –

DATA

12

34

56789

10 11 12 13 14 15

– + + – n.c. n.c.

OC1 OC2 (opcja) (opcja)

31

31 32 33 34 35

34

mV V

33 34

OC1 ÷ OC2: Umax = 30V DC,

Imax = 30mA, Pmax = 100mW

RTD

RTD

+-

mA

TC

Figure H. — Terminals description (OC-type and active current outputs)

Figure I. — Terminals description (relay and passive current outputs)

Figure J. — Terminals description (OC-type and passive current outputs)

24-0352 © Icon Process Controls Ltd.

6

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Wiring Diagrams

All connections must be made while power supply is disconnected.

Figure K. — Terminals description (relay and active voltage outputs)

Figure L. — Terminals description (OC-type and active voltage outputs)

Figure M. — Connection of 2-wire current converters

24-0352 © Icon Process Controls Ltd.

7

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Wiring Diagrams

All connections must be made while power supply is disconnected.

Figure N. — Connection of 3-wire current converters

(Figure 4.17b)

Figure O. — Connection of voltage converters

4.17a

Temperature sensor can be connected to the device in typical precision of measurement 4-wire circuit is recommended.

4-wire

circurirte(cFigure

P-a)

or

3-wire

c4ir.c1u7iat (Figure

P-b).

Due

to

(FigIuf r2ew4ir.1e7cbir)cuit is used, the recsiissitoannc2e- wofirweirceosnsnheoculdobneisasnsomt rall as possible, to avoid of measurement errors. Measured

value can be corrected (constant correcton) using “toFS” parameter from menu “inPt”. Due to low precision 2-wire

connection is not recommended.on

cul

When 4-wires or 2-wciroensnceocnnoecntion is used, the resistance of parrticcuullar wrireesc(Ra ÷ Rd) CAN BE DIFFERENT. When 3-wires creosnisnptearcnotcpioeen.rTichsoeumsreepsdeis, ntthasneacreeosonisf topafanrictt’eiscuorfleacpsrisiaswirottiacrnenu2clsa- ehrw.owTuirihlerdecsnroo(eRntsanbise÷etcaRgndroec)aneMteoiUsrfSntpThoaaBtrnEr2cI0DuElaN.rTwICirAL to enable proper compensation of it’s

on

cul

proper

compencsaoa)nnoenco3fo1int’3s2re3s3ist3a4nce.

b)
Th

rcul resist3an1c3e2of33pa3r4cular

c)
wir

n.c.

31 32 33 34
n.c. n.c.

Ra Rb Rc : Rd

Ra

Rc : Rd

Ra

Rc

RTD Ra, Rb, Rc, Rd can be different

RTD Ra = Rc = Rd

RTD Ra, Rc can be different

Figure P. — Connection of RTD sensors:

a) 4-wires circuit; b) 3-wires circuit; c) 2-wires circuit

24-0352 © Icon Process Controls Ltd.

8

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

nec Wiring Diagrams
deteconnec

All connections must be made while power supply is disconnected.
.

The connection circuit should not be changed while unit is powered. While using TC, RTD or voltage inputs (0-150mV)
the device is able to detect wire breaks. Wire breaks are detected within about 2 seconds. For connectors number 32
and d33etoefcRToDninput it may take up to about 7 seconds. During detection measurem. ents will be incorrect. If wire break is
detected “S.Err” (sensor error) message is displayed.

. Figure Q. — Connection of power supply and relays

induc

.

Contactsaodfdreilaoynoaultputs are not equipped with spark suppressors. Whilme uins.e the relay outputs for switching of inductive

loads (coils, contactors, power relays, electromagnets, m(obteorseertc) .) it is required to usloe. aaddd. itional suppression circuit (typically clloifaeapdoac.fcIonritenocltaraoay4dnc7csdtnoesiFnqr/tuiosamenecnitasinsc.nl.erd2iso5uef0csuV. sAinCginthseersieuspwpriethss1i0o0nRc/i5rcWuirte, tshisetoler)v, ecloonfngeecnteedramictneidnp.aerlaelcletrlotomraeglanyetteicrmdiisntaulrsboarn(cb.eesttiserlo) dwierer,catlnydotnhtehe

(beer)

load.

c

contacts rises.

Figure R. — Examples of suppression circuit connection: a) to relay terminals; b) to the inductive load

24-0352 © Icon Process Controls Ltd.

9

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Wiring Diagrams

All connections must be made while power supply is disconnected.

Figure S. — Example of OC-type outputs connection

Figure T. — Example of active current outputs connection (for device with active current output only)

Figure U. — Example of passive current outputs connection (for device with passive current output only)

Figure V. — Example of active voltage outputs connection (for device with active output only)

24-0352 © Icon Process Controls Ltd.

10

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Programming 4-20mA Input

STEPS

DISPLAY

1

Main Display

3 Sec.

2

Relay 1

5x Note: 2x for ITC 350

3

Input

4

Type

4x

5

Low C

6

Set 4mA Value

2 Sec.

7

Save Value

8

High C

9

Set 20mA Value

2 Sec.

10

Save Value

11

Return to Main Display

2x

24-0352 © Icon Process Controls Ltd.

OPERATION
MAIN DISPLAY

RELAY 1 Settings

INPUT Menu

INPUT Type

Enter LOW C | 4mA | Std = 0

Press Press

or to change digit to advance to next digit

SAVE SELECTION and advance to High C

Enter HIGH C | 20mA

Press Press

or to change digit to advance to next digit

SAVE SELECTION

Return to MAIN DISPLAY
11

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Programming 4-20mA Output

STEPS

DISPLAY

1

Main Display

3 Sec.

2

Relay 1

6x Note: 3x for ITC 350

3

Output

4

Output Mode

5

Output Low

6

Set 4mA Value

2 Sec.

7

Save Value

8

Output High

9

Set 20mA Value

2 Sec.

10

Save Value

11

Return to Main Display

2x

24-0352 © Icon Process Controls Ltd.

OPERATION
MAIN DISPLAY

RELAY 1 Settings

OUTPUT MENU

OUTPUT MODE

Enter OUTPUT LOW | 4mA | Std = 0

Press Press

or to change digit to advance to next digit

Save Selection and advance to Output High

Enter OUTPUT High | 20mA

Press Press

or to change digit to advance to next digit

SAVE SELECTION

Return to MAIN DISPLAY
12

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

Calculating 4-20mA Input

Sensor Type Submersible Ultrasonic

20mA Set Point Range of sensor / Specific Gravity = 20mA (for inches) Tank Height

Radar

Tank Height

Programming Relays

STEPS
1
2

Main Display

3 Sec.
Relay 1

DISPLAY

3

Output

4

Set Relay Value

2 Sec.

5

Save Value

6

Set Hysterisis

7

Save Value

2 Sec.

8

Return to Main Display

8

Return to Main Display

2x

OPERATION
MAIN DISPLAY

RELAY 1 Settings

OUTPUT MENU

Press Press

or to change digit to advance to next digit

Save Selection and advance to Hysterisis

Hysterisis Settings

Press Press

or to change digit to advance to next digit

Save Selection

Press Button (2x) (Home Screen | Current Level Reading appears on display)

24-0352 ©10Icon ProcessSCaovnetVroallsuLetd.

13

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller
Pump Controller with Dual-Pump Alternation
The ITC 450 can be used as an affordable pump controller when combined with a continuous level transmitter. One of the most common pump control applications is shown below –controlling and alternating two pumps. The goal is to control the level between 1000 and 6000 gallons. The main pump turns on when the level reaches 6000 gallons and pumps down to 1000 gallons and then shuts the pump off. The next cycle, the backup pump turns on at 6000 gallons and shuts off at 1000 gallons. If at any time the active pump can’t keep the level below 7000 gallons, the other pump would come on as well.
Pump Alternation Control Operation

24-0352 © Icon Process Controls Ltd.

14

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller
Pump Controller with Dual-Pump Alternation

Relay #1 turns the main pump on at 6000 gallons and turns it off at 1000 gallons.

4-20mA

1

Junction Box

ITC 450 Level Display

12

34

56789

10 11 12 13 14 15

31 32 33 34 35

ON 6000
OFF 1000

100 Series Level Sensor

Control Relay

Control Relay

ON

Main Pump

OFF

Backup Pump

2

Junction Box

4-20mA

ITC 450 Level Display

12

34

56789

10 11 12 13 14 15

31 32 33 34 35

With the Pump Alternation

ON 6000

feature activated, the next

time the level reaches 6000

gallons, relay #2 starts the

backup pump.

OFF

1000

100 Series Level Sensor

24-0352 © Icon Process Controls Ltd.

Control Relay

Control Relay

OFF Main Pump
ON Backup Pump

15

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller
Pump Controller with Dual-Pump Alternation

3

ON 7000

If the pump is not able

ON 6000

to keep up, and the level

reaches 7000 gallons, the

other relay will start the

inactive pump as well

OFF

1000

Junction Box

4-20mA

100 Series Level Sensor

ITC 450 Level Display

12

34

56789

10 11 12 13 14 15

31 32 33 34 35

Control Relay

Control Relay

ON Main Pump
ON Backup Pump

4
ON 7000
ON 6000
When the level falls below 1000 gallons, both pumps will turn off.
OFF 1000

Junction Box

4-20mA

100 Series Level Sensor

24-0352 © Icon Process Controls Ltd.

ITC 450 Level Display

12

34

56789

10 11 12 13 14 15

31 32 33 34 35

Control Relay

Control Relay

OFF

Main Pump

OFF

Backup Pump

16

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

11. THE MODBUS PROTOCOL HANDLING

Transmission parameters: 1 start bit, 8 data bits, 1 or 2 stop bit (2 bits are send, 1 and 2 bits

are accepted when receive), no parity control

Baud rate:

selectable from: 1200 to 115200 bits/second

Transmission protocol: MODBUS RTU compatible

The device parameters and display value are available via RS-485 interface, as HOLDINGtype registers (numeric values are given in U2 code) of Modbus RTU protocol. The registers (or groups of the registers) can be read by 03h function, and wrote by 06h (single registers) or 10h (group of the registers) accordingly to Modbus RTU specification. Maximum group size for 03h and 10h functions can not exceeds 16 registers (for single frame).
i The device interprets the broadcast messages, but then do not sends the answers.

11.1. LIST OF REGISTERS

Register Write Range

Register description

01h

No -999 ÷ 9999 Measurement value (no decimal point)

The status of the current measurement; 0h – data valid; A0h – top

02h

No 0h, A0h, 60h border of the measurement range is exceeded; 60h – bottom border

of the measurement range is exceeded;

03h Yes

0 ÷ 3

“Pnt ” parameter in “InPt” menu (decimal point position) 0 – ” 0″; 1 – ” 0.0″; 2 – ” 0.00″; 3 – “0.000”

State of the relays and alarm LED (binary format) (1 – on, 0 – off): 00000000 000e00ba 04h Yes see descr. a – relay R1; b – relay R2; e – alarm LED; If written, only a, b bits are important (others are ignored) these bits allows user to control the relays via RS-485 interface

State of active current output, expressed in 1/256 mA units ­ it Yes 0h ÷ 1800h means that high byte express integer part, and low byte fractional
part of desired output current.

05h1

State of passive current output, expressed in 1/256 mA units ­ it Yes 2CCh÷1800h means that high byte express integer part, and low byte fractional
part of desired output current.

State of active voltage output, expressed in 1/512 V units ­ it means Yes 0h ÷ 1600h that high byte express integer part, and low byte fractional part of
desired output voltage.

06h

No -999 ÷ 9999 Peak (drop) value (no decimal point)

10h Yes

0 ÷ 5

“tyPE” parameter in “InPt” menu (nominal input range). 0 – 0-20 mA range; 1 – 4-20 mA range; 2 – 0-10 V range; 3 – 2-10 V range; 4 – 0-5 V range; 5 – 1-5 V range

11h Yes

0 ÷ 5

“CHAr” parameter in “InPt” menu (characteristic type) 0 – linear ; 1 – square; 2 – square root; 3 – user defined; 4 – volume characteristics of a cylindrical tank in the vertical position; 5 volume characteristics of a cylindrical tank in the horizontal position

12h Yes

0 ÷ 5

“FiLt” parameter in “InPt” menu (measurement filtering rate)

24-0352 © Icon Process Controls Ltd.

17

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

Register Write

13h Yes

14h Yes

15h Yes

16h Yes

17h Yes

19h Yes

1Ah Yes

1Bh Yes

1Ch Yes

1Dh Yes

1Eh Yes

20h2

Yes

21h

No

22h3

Yes

23h4

Yes

24h Yes

25h Yes

27h Yes
2Dh Yes 2Fh Yes 30h Yes 31h Yes 32h Yes
33h Yes

Range

Register description

0 ÷ 3

“Pnt “parameter in “InPt” menu (the copy of 03h register, decimal point position) 0 – ” 0″; 1 – ” 0.0″; 2 – ” 0.00″; 3 – “0.000”

-999 ÷ 9999 “Lo C” parameter in “InPt” menu, no decimal point included

-999 ÷ 9999 “Hi C” parameter in “InPt” menu, no decimal point included

0 ÷ 999 “Lo r” parameter in “InPt” menu, in 0.1%

0 ÷ 199 “Hi r” parameter in “InPt” menu, in 0.1%

0 ÷ 9999 “t h1” parameter in “InPt” menu, no decimal point included

0 ÷ 9999 “t h2” parameter in “InPt” menu, no decimal point included

0 ÷ 9999 “t h3” parameter in “InPt” menu, no decimal point included

0 ÷ 9999 “t d” parameter in “InPt” menu, no decimal point included

0 ÷ 9999 “t Sn” parameter in “InPt” menu, no decimal point included

0 ÷ 9999 “t Sh” parameter in “InPt” menu, no decimal point included

0 ÷ 199 Device address

21F0h Device identification code (ID)

0 ÷ 7

“bAud” parameter in “rS” menu (baud rate); 0 – 1200 baud; 1 – 2400 baud; 2 – 4800 baud; 3 – 9600 baud; 4 – 19200 baud; 5 – 38400 baud; 6 – 57600 baud; 7 – 115200 baud

0 ÷ 1

“mbAc” parameter in “rS” menu (permission to write registers via RS-485 interface); 0 – write denied ; 1 – write allowed

see descr.

Parameters of “SECU” menu (binary format (0 – ,,oFF”, 1 – ,,on”): bit 0 – “A r1” parameter; bit 1 – “A r2” parameter

0 ÷ 5

“rESP” parameter in “rS” menu (additional response delay); 0 – no additional delay; 1 – “10c” option; 2 – “20c” option; 3 – “50c” option; 4 – “100c” option; 5 – “200c” option;

0 ÷ 99

“mbtO” parameter in “rS” menu (maximum delay between received frames); 0 – no delay checking; 1 ÷ 99 – maximum delay expressed in seconds

1 ÷ 8

“bri” parameter (display brightness); 1 – the lowest brightness; 8 – the highest brightness

0 ÷ 1

“Edit” parameter (numerical parameters edit mode); 0 – ,,dig” mode; 1 – ,,SLid” mode

-999 ÷ 9999 “SEtP” parameter in “rEL1” menu, no decimal point included

-999 ÷ 999 “HySt” parameter in “rEL1” menu, no decimal point included

0 ÷ 5

“modE” parameter in “rEL1” menu: 0 – “noAC” mode; 1 – “on” mode; 2 – “oFF” mode; 3 – “in” mode; 4 – “out” mode; 5 – “modb” mode

0 ÷ 999

“t on” parameter in “rEL1” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter – register no. 35h)

24-0352 © Icon Process Controls Ltd.

18

LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

Register Write Range

Register description

34h

Yes

0 ÷ 999

“toFF” parameter in “rEL1” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter – register no. 35h)

35h Yes

0 ÷ 1

“unit” parameter in “rEL1” menu: 0 – seconds; 1 – minutes

36h Yes

0 ÷ 2

“AL” parameter in “rEL1” menu: 0 – no changes; 1 – on; 2 – off

37h Yes -999 ÷ 9999 “SEt2” parameter in “rEL1” menu, no decimal point included

38h Yes -999 ÷ 9999 “SEtP” parameter in “rEL2” menu, no decimal point included

39h Yes -999 ÷ 999 “HySt” parameter in “rEL2” menu, no decimal point included

3Ah Yes

0 ÷ 5

“modE” parameter in “rEL2” menu: 0 – “noAC” mode; 1 – “on” mode; 2 – “oFF” mode; 3 – “in” mode; 4 – “out” mode; 5 – “modb” mode

3Bh

Yes

0 ÷ 999

“t on” parameter in “rEL2” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter – register no. 3Dh)

3Ch

Yes

0 ÷ 999

“toFF” parameter in “rEL2” menu, expressed in tenth of seconds or tenth of minutes depend on “unit” parameter – register no. 3Dh)

3Dh Yes

0 ÷ 1

“unit” parameter in “rEL2” menu: 0 – seconds; 1 – minutes

3Eh Yes

0 ÷ 2

“AL” parameter in “rEL2” menu: 0 – no changes; 1 – on; 2 – off

3Fh Yes -999 ÷ 9999 “SEt2” parameter in “rEL2” menu, no decimal point included

50h Yes

0 ÷ 1

“modE” parameter in “HOLd” menu (type of detected changes): 0 – peaks; 1 – drops

51h

Yes

0 ÷ 9999

“PEA” parameter in “HOLd” menu (minimum detectable change, no decimal point included)

52h

Yes

0 ÷ 199

“timE” parameter in “HOLd” menu, maximum peaks’ (or drops’) display time expressed in seconds

53h Yes

0 ÷ 1

“HdiS” parameter in “HOLd” menu: 0 – “rEAL” mode ; 1 – “HOLd” mode

54h Yes

0 ÷ 1

“H r1” parameter in “HOLd” menu : 0 – “rEAL” mode ; 1 – “HOLd” mode

55h Yes

0 ÷ 1

“H r2” parameter in “HOLd” menu: 0 – “rEAL” mode ; 1 – “HOLd” mode

58h1

Yes

0 ÷ 1

“HOut” parameter in “HOLd” menu: 0 – “rEAL” mode ; 1 – “HOLd” mode

70h5

Yes

-999 ÷ 1999

The value of ,,X” coordinate of point no. 1 of the user defined characteristic, expressed in 0.1%

71h5

Yes

-999 ÷ 9999

The value of ,,Y” coordinate of point no. 1 of the user defined characteristic, no decimal point included

72h5 ÷ 95h5

Further pairs of ,,X” – ,,Y” coordinates of points no. 2 ÷ 19 of the user defined characteristic

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

Register Write Range

Register description

96h5

Yes

-999 ÷ 1999

The value of ,,X” coordinate of point no. 20 of the user defined characteristic, expressed in 0.1%

97h5

Yes

-999 ÷ 9999

The value of ,,Y” coordinate of point no. 20 of the user defined characteristic, no decimal point included

“Omod” parameter in “OUtP” menu (active current output mode)

Yes

0 ÷ 3

0 – current output disabled; 1 – current output enabled with 4÷20mA mode; 2 – current output enabled with 0÷20mA mode;

3 – current output controlled via RS-485 interface

A0h1

Yes

0 ÷ 2

“Omod” parameter in “OUtP” menu (passive current output mode) 0 – current output disabled; 1 – current output enabled with 4÷20mA mode; 2 – current output controlled via RS-485 interface

“Omod” parameter in “OUtP” menu (active voltege output mode)

0 – voltage output disabled; 1 – voltage output enabled with 0÷5V

Yes

0 ÷ 5

mode; 2 – voltage output enabled with 1÷5V mode; 3 – voltage

output enabled with 0÷10V mode; 4 – voltage output enabled with

2÷10V mode; 5 – voltage output controlled via RS-485 interface

A1h1 Yes -999 ÷ 9999 “OUtL” parameter in “OUtP” menu, no decimal point included

A2h1 Yes -999 ÷ 9999 “OUtH” parameter in “OUtP” menu, no decimal point included

Yes A3h1
Yes

0 ÷ 999 0 ÷ 299

“Lo r” parameter in “OUtP” menu, for active current output and active voltage output, expressed in 0.1%
“Lo r” parameter in “OUtP” menu for passive current output, expressed in 0.1%

Yes A4h1
Yes

0 ÷ 199 0 ÷ 99

“Hi r” parameter in “OUtP” menu for active and passive current output, expressed in 0.1%
“Hi r” parameter in “OUtP” menu for active voltage output, expressed in 0.1%

Yes

0 ÷ 3

“AL” parameter in “OUtP” menu (active current output value on critical exception): 0 – no change; 1 – 22.1 mA; 2 – 3.4 mA; 3 – 0 mA

A5h1

Yes

0 ÷ 2

“AL” parameter in “OUtP” menu (passive current output value on critical exception): 0 – no change; 1 – 22.1 mA; 2 – 3.4 mA

“AL” parameter in “OUtP” menu (active voltage output value on

Yes

0 ÷ 5

critical exception): 0 – no change; 1 – 11 V; 2 – 5.5; 3 – 1.2 V;

4 – 0.6 V; 5 – 0 V

1 – these registers are active only if device is equipped with current or voltage output 2 – after writing to register no 20h the device responds with an “old” address in the message. 3 – after writing to register no 22h the device responds with the new baud rate. 4 – the value of the “mbAc” parameter is also connected to write to this register, so it is possible to block a writes, but
impossible to unblock writes via RS-485 interface, The unblocking of the writes is possible from menu level only. 5 – the pairs of ,,X -Y” coordinates may be defined for any free point. The pair is “free” (it means that particular point
is not defined) if ,,X” coordinate of this point is equal 8000h. After writing both X and Y coordinate the point is defined and used in calculation of result. The coordinates of any point can be changed at any time.

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller
RS485 Modbus Programming

11.2. TRANSMISSION ERRORS DESCRIPTION
If an error occurs while write or read of single register, then the device sends an error code according to Modbus RTU specifications (example message no 1).
Error codes: 01h – illegal function (only functions 03h, 06h and 10h are available), 02h – illegal register address 03h – illegal data value 08h – no write permission ( see: “mbAc” parameter) A0h – exceed of upper border of input range 60h – exceed of lower border of input range A0h and 60h codes can appear only during reg. 01h is reading by 03h function (read of a single register).

11.3. EXAMPLES OF QUERY/ANSWER FRAMES

Examples apply for device with address 1. All values are represent hexadecimal.

Field description:

ADDR

Device address on modbus network

FUNC

Function code

REG H,L

Starting address (address of first register to read/write, Hi and Lo byte)

COUNT H,L No. of registers to read/write (Hi and Lo byte)

BYTE C

Data byte count in answer frame

DATA H,L Data byte (Hi and Lo byte)

CRC L,H

CRC error check (Hi and Lo byte)

1. Read of the displayed value (measurement), SRP-N118 device address = 01h:

ADDR FUNC

01

03

REG H,L

00

01

COUNT H,L

00

01

CRC L,H

D5

CA

a) The answer (we assume that the measure result is not out of range):

ADDR FUNC

01

03

BYTE C 02

DATA H,L

00

FF

CRC L,H

F8

04

DATA H, L – displayed value = 255, no decimal point. Decimal point position can be read from reg. 03h.

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

b) The answer (if an error occur):

ADDR FUNC

01

83

ERROR 60

CRC L,H

41

18

ERROR – error code = 60h, bottom border of the measurement range is exceeded 2. Read of device ID code

ADDR FUNC

01

03

The answer:

REG H,L

00

21

COUNT H,L

00

01

CRC L,H

D4

00

ADDR FUNC BYTE C

01

03

02

DATA H,L

21

F0

CRC L,H

A0

50

DATA – identification code (21F0h) 3. Change of the device address from 1 to 2 (write to reg. 20h)

ADDR FUNC

01

06

REG H,L

00

20

DATA H,L

00

02

CRC L,H

09

C1

DATA H – 0 DATA L – new device address (2)
The answer (the same as the message):

ADDR FUNC

01

06

REG H,L

00

20

DATA H,L

00

02

CRC L,H

09

C1

4. Change of baud rate of all devices connected to the net (BROADCAST message).

ADDR FUNC

00

06

REG H,L

00

22

COUNT H,L

00

04

DATA H – 0 DATA L – 4, new baud rate 19200 baud

CRC L,H

29

D2

i Device do not reply to BROADCAST-type messages.

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller
RS485 Modbus Programming

5. Read of the registers 1, 2 and 3 in one message (example of reading a number of registries in one frame):

ADDR FUNC

01

03

REG H,L

00

01

COUNT H,L

00

03

CRC L,H

54

0B

COUNT L – the count of being read registers (max.16) The answer:

ADDR FUNC BYTE C DATA H1,L1 DATA H2,L2 DATA H3,L3 CRC L,H

01

03

06

00 0A 00 00 00 01 78 B4

DATA H1, L1 – reg. 01h (10 – displayed value “1.0”), DATA H2, L2 – reg. 02h (0 – no errors),, DATA H3, L3 – reg. 03h (1 – decimal point position ” 0.0″).
i There is no full implementation of the Modbus Protocol in the device. The functions presented above are available only.

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

12. DEFAULT AND USER’S SETTINGS LIST

Parameter

Description

Default value

SEtP SEt2 HYSt modE t on toFF unit AL
SEtP SEt2 HYSt modE t on toFF unit AL
tYPE CHAr FiLt Pnt Lo C Hi C t h1 t h2 t h3 t d t Sn t Sh Lo r

Parameters of relay R1 operation (“rEL1” menu)

Relay R1 threshold

20.0

Relay R1 second threshold

40.0

Hysteresis of relay R1

0.0

Operation mode of relay R1

on

Turn on delay of relay R1

0.0

Turn off delay of relay R1

0.0

Unit of “t on”, “toFF” parameters of relay R1

SEC

Reaction for critical situation of relay R1

oFF

Parameters of relay R2 operation (“rEL2” menu)

Relay R2 threshold

40.0

Relay R2 second threshold

60.0

Hysteresis of relay R2

0.0

Operation mode of relay R2

on

Turn on delay of relay R2

0.0

Turn off delay of relay R2

0.0

Unit of “t on”, “toFF” parameters of relay R2

SEC

Reaction for critical situation of relay R2

oFF

Configuration of measurement input (“inPt” menu)

Input mode

,,4-20″

Conversion characteristic mode

Lin

Filtering ratio

0

Decimal point position

0.0

Minimum displayed value (for nominal range)

000.0

Maximum displayed value (for nominal range)

100.0

Height (length) first part of the tank

00.00

Height (length) second part of the tank

00.00

Height (length) third part of the tank

00.00

Tank diameter

00.01

Distance between sensor and bottom of the tank

00.00

Height of the sensor

20.00

Extension of the bottom of the nominal input range

5.0 (%)

User’s value

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LevelPro® — ITC 450 & 350 Series
Tank Level Display + Controller

RS485 Modbus Programming

Parameter

Description

Default value User’s value

Hi r
Omod OUtL OUtH Lo r
Hi r AL
bri
modE PEA timE HdiS H r1 H r2 HOut
A r1
A r2
Addr bAud mbAc mbtO rESP
Edit

Extension of the top of the nominal input range

5.0 (%)

Current output configuration (“OUtP” menu)

Current output mode

,,4-20″ (mA)

Display value for 4 mA current output

0.0

Display value for 20 mA current output

100.0

Extension of the bottom of the nominal output range

5.0 (%)

Extension of the top of the nominal output range

5.0 (%)

Current output value on critical exception

22.1 (mA)

Display parameters

Display brightness

bri6

Configuration of peaks detection function (“HOLd” menu)

Kind of detected changes

norm

Minimum detected change

0.0

Maximum time of peak displaying

0.0

The type of displayed value

HOLd

Source of relay R1, and LED R1 control

rEAL

Source of relay R2, and LED R2 control

rEAL

Source of current output control

rEAL

Settings of access to the configuration parameters (“SECu” menu)

Permission to changes of relay R1 threshold without of the user password knowledge

on

Permission to changes of relay R2 threshold without of the user password knowledge

on

RS 485 interface configuration (menu “rS”)

Device address

0

Baud rate

9.6

Permission to changes of configuration registers

on

Maximum delay between received messages

0

Additional delay of answer transmission

Std

Configuration of numerical parameters edition

Numerical parameters edit mode

dig

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