RICE LAKE SCT-4X-MODBUS TCP IP Weight Transmitter User Guide

: June 17, 2024
: RICE LAKE

RICE LAKE SCT-4X-MODBUS TCP IP Weight Transmitter User Guide

Electrical Schematic

Manuals are available from Rice Lake Weighing Systems at www.ricelake.com/manuals
Warranty information is available at www.ricelake.com/warranties

Key Functions

Indicator Light Descriptions

Reboot the weight transmitter
Press the key when display shows the 888888 message

Function Mode

. Maximum Scale Capacity, Increment and Decimal Point Settings

Zeroing Mechanical Tare (pre-tare zeroing)

Inputs Settings

RS485 Port

Load Cell Exclusion (for dependent channel systems)

If a load cell is broken, it’s possible to temporarily exclude the channel where it is connected and continue to weigh, pending replacement.
! WARNING: this operation reduces the accuracy of the weighing system. We recommend use for liquid weighing or in applications
where the load is evenly distributed.

Example:

The unbalance condition is signalled via Modbus / Fieldbus or a digital output (refer to the complete manual to set the output).
This function is only available if EXCL.CH = NoNE.
Use this function only in systems where the load is evenly distributed

Programming Errors

MESSAGE	DESCRIPTION	SOLUTION
preC.	Calibration error	First calibrate the zero point (zero), then proceed

with sample weight acquisition (span) (section 9).
Err.pn| ****

Calibration error

| Check the connection of the load cell. Verify the load cell signal is stable, valid and greater than the previously acquired point.
Er 11| Calibration error| Increase the calibration weight.
Er 12| Calibration error| Check the signal from the load cell increases when weight is incremented on the scale.
Er 37| Calibration error| Repeat calibration and verify capacity and division have been correctly set.
Er 39| Instrument not configured| Transmitter needs to be configurated.
C.er.36| Calibration error| Verify the signal from the load cell is not negative.
C.er.37| Calibration error| Verify the signal from the load cell is not negative.

Err.mo

| ****

Weight unstable

| Check in adC.uv parameter that the signal is stable.

If the connection of the cells is with 4 wires, check that the sense jumpers are inserted.

adC.err| A/D converter error| Converter failure. Reboot the instrument.
Cel.err| Global load cell error| Signal anomaly: check the load cells connection.
Er.Cel.1

…

Er.Cel.4

| ****

Load cell error

| ****

Signal anomaly: check the indicated load cell connection.

Modbus TCP

MODBUS TCP REGISTERS – CH / ind.ch (1 SCALE)

Data	Register	DESCRIPTION

Gross weight

| 30001| ****

Bytes 1, 2, 3 and 4 contain the Gross Weight value.

30003

Net weight

| 30005| ****

Bytes 5, 6, 7 and 8 contain the Net Weight value.

30007

Input status register

| ****

30009

| Bit 15(msb) Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8 (lsb)

| Active channel. Bit 15 Bit 14 Active Channel

Active channel.

No function. 0 0 Channel 1

No function. 0 1 Channel 2

No function.

No function. 1 0 Channel 3

Status of input n. 2. 1 1 Channel 4

Status of input n. 1.

Bit 7(msb) Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (lsb)

| 1 = Scale unloaded (gross weight = 0). Tare PT (1 = PT tare is active).

Tare (1 = Tare is active).

Overload condition (0 = No; 1 = Overload). Underload condition (0 = No; 1 = Underload). Weight Stability (0 = Unstable; 1 = Stable).

Gross Weight Polarity (0 = “+”; 1 = “-”). Net Weight Polarity (0 = “+”; 1 = “-”).

Command status register

| ****

30011

| Last received command.
Bit 7(msb) Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (lsb)

| Last command result. Last command result. Last command result. Last command result.

Counting of processed commands. Counting of processed commands. Counting of processed commands. Counting of processed commands.

Output status register

| ****

30013

| No Function.
Bit 7(msb)

…

Bit 2

Bit 1

Bit 0(lsb)

| No function.

…

No function.

Digital output 2 status (0 = OFF; 1 = ON). Digital output 1 status (0 = OFF; 1 = ON).

Selected page| 30015| Shows the value of the selected page (3001).
µV Channel 1| 30017| Bytes 16 and 17 contain the µV value of the channel

µV Channel 2| 30019| Bytes 18 and 19 contain the µV value of the channel
µV Channel 3| 30021| Bytes 20 and 21 contain the µV value of the channel
µV Channel 4| 30023| Bytes 22 and 23 contain the µV value of the channel

MODBUS TCP REGISTERS – ch (4 SCALES)

Data	Register	DESCRIPTION

Status register scale 1

| ****

30001

| Bit 15(msb) Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8 (lsb)

| Not used. Not used. Not used.

Scale active (0 = “no”; 1 = “yes”). Decimals (00 = 0; 01 = 1; 10 = 2; 11 = 3)

Unit of Measure (00 = “g”; 01 = “kg”; 10 = “t”; 11 = “lb”).

Bit 7(msb) Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (lsb)

| Tare PT (1 = PT tare is active). Tare (1 = Tare is active).

Net Weight Polarity (0 = “+”; 1 = “-”).

1 = Scale unloaded (gross weight = 0). Overload condition (0 = No; 1 = overload). Underload condition (0 = No; 1 = underload). Stability (0 = “unstable”; 1 = “stable”).

Gross Weight Polarity (0 = “+”; 1= “-”).

Status register scale 2| 30002| Same as Status register scale 1.
Status register scale 3| 30003| Same as Status register scale 1.
Status register scale 4| 30004| Same as Status register scale 1.

Input status register

| ****

30005

| Bit 15(msb) Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8 (lsb)

| Active channel. Active channel. No function.

No function. No function. No function.

Status of input n. 2. Status of input n. 1.

| | |
| |
| |
| |
| |
No function.
Command status register| 30006| Same as Command status register page 10.
Output status register| 30007| Same as Output status register page 10.
Selected page| 30008| Shows the value of the selected page (2000).