aspar MOD-1AO 1 Analog Universal Output User Manual

aspar MOD-1AO 1 Analog Universal Output

INSTRUCTION

Thank you for choosing our product.

• This manual will help you with proper support and proper operation of the device.
• The information contained in this manual have been prepared with utmost care by our professionals and serve as a description of the product without incurring any liability for the purposes of commercial law.
• This information does not release you from the obligation of own judgment and verification.
• We reserve the right to change product specifications without notice.
• Please read the instructions carefully and follow the recommendations contained therein.

WARNING: Failure to follow instructions can result in equipment damage or impede the use of the hardware or software.

Safety rules

• Before first use, refer to this manual;
• Before first use, make sure that all cables are connected properly;
• Please ensure proper working conditions, according to the device specifications (eg: supply voltage, temperature, maximum power consumption);
• Before making any modifications to wiring connections, turn off the power supply.

Module Features

Purpose and description of the module

The MOD-1AO module has 1 current analog output (0-20mA lub 4-20mA) and 1 voltage analog output (0-10V). Both outputs can be used at the same time. The modul is equipped in two digital inputs. In addition, terminals IN1 and IN2 can be used to connect one encoder. Setting the output current or voltage value is done via RS485 (Modbus protocol), so you can easily integrate the module with popular PLCs, HMI or PC equipped with the appropriate adapter.

This module is connected to the RS485 bus with twisted-pair wire. Communication is via MODBUS RTU or MODBUS ASCII. The use of 32-bit ARM core processor provides fast processing and quick communication. The baud rate is configurable from 2400 to 115200.

• The module is designed for mounting on a DIN rail in accordance with DIN EN 5002.
• The module is equipped with a set of LEDs used to indicate the status of inputs and outputs useful for diagnostic purposes and helping to find errors.
• Module configuration is done via USB by using a dedicated computer program. You can also change the parameters using the MODBUS protocol.

Technical Specifications

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Power    supply

| Voltage| 10-38VDC; 20-28VAC
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Maximum Current| DC: 90 mA @ 24V AC: 170 mA @ 24V
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Outputs

| No of outputs| 2
Voltage output| 0V do 10V (resolution 1.5mV)
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Current output

| 0mA do 20mA ( resolution 5μA);

4mA do 20mA (value in ‰ – 1000 steps) (resolution 16μA)

Measurement resolution| 12 bits
ADC processing time| 16ms / channel
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Digital inputs

| No of inputs| 2
Voltage range| 0 – 36V
Low state „0”| 0 – 3V
High state „1”| 6 – 36V
Input impedance| 4kΩ
Isolation| 1500 Vrms
Input type| PNP or NPN
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Counters

| No| 2
Resolution| 32 bits
Frequency| 1kHz (max)
Impulse Width| 500 μs (min)
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Temperature

| Work| -10 °C – +50°C
Storage| -40 °C – +85°C
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Connectors

| Power supply| 3 pins
Communication| 3 pins
Inputs and Outputs| 2 x 3 pins
Configuration| Mini USB
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Size

| Heigth| 90 mm
Length| 56 mm
Width| 17 mm
Interface| RS485| UP to 128 devices

Dimensions of the product: Look and dimensions of the module are shown below. The module is mounted directly to the rail in the DIN industry standard.

Communication configuration

Grounding and shielding: In most cases, IO modules will be installed in an enclosure along with other devices which generate electromagnetic radiation. Examples of these devices are relays and contactors, transformers, motor controllers etc. This electromagnetic radiation can induce electrical noise into both power and signal lines, as well as direct radiation into the module causing negative effects on the system. Appropriate grounding, shielding and other protective steps should be taken at the installation stage to prevent these effects. These protective steps include control cabinet grounding, module grounding, cable shield grounding, protective elements for electromagnetic switching devices, correct wiring as well as consideration of cable types and their cross sections.

Network Termination: Transmission line effects often present a problem on data communication networks. These problems include reflections and signal attenuation. To eliminate the presence of reflections from the end of the cable, the cable must be terminated at both ends with a resistor across the line equal to its characteristic impedance. Both ends must be terminated since the direction of propagation is bi-directional. In the case of an RS485 twisted pair cable this termination is typically 120 Ω.

Types of Modbus Registers: There are 4 types of variables available in the module

Type| Beginning address| Variable| Access| Modbus Command
---|---|---|---|---
1| 00001| Digital Outputs| Bit Read & Write| 1, 5, 15
2| 10001| Digital Inputs| Bit Read| 2
3| 30001| Input Registers| Registered Read| 3
4| 40001| Output Registers| Registered Read & Write| 4, 6, 16

Communication settings: The data stored in the modules memory are in 16-bit registers. Access to registers is via MODBUS RTU or MODBUS ASCII.

Default settings

Configuration registers

Type| Beginning address| Variable| Access| Modbus Command
---|---|---|---|---
1| 00001| Digital Outputs| Bit Read & Write| 1, 5, 15
2| 10001| Digital Inputs| Bit Read| 2
3| 30001| Input Registers| Registered Read| 3
4| 40001| Output Registers| Registered Read & Write| 4, 6, 16

Watchdog function: This 16-bit register specifies the time in milliseconds to watchdog reset. If module does not receive any valid message within that time, all Digital and Analog Outputs will be set to the default state.

• This feature is useful if there is an interruption in data transmission and for security reasons. Output states must be set to the appropriate state in order to assure the safety of persons or property.
• The default value is 0 milliseconds which means the watchdog function is disabled.
• Range: 0-65535 ms

Indicators

answer.
AOV| The LED lights up when the output voltage is non-zero.
AOI| The LED lights up when the output current is non-zero.
DI1, DI2| Input state 1, 2

Module Connection

Modules Registers

Registered access

No of received packets

40034| 33| 0x21| Received packets MSB| Read & Write
40035| 34| 0x22| Incorrect packets LSB| Read & Write| __

No of received packets with error

40036| 35| 0x23| Incorrect packets MSB| Read & Write
40037| 36| 0x24| Sent packets LSB| Read & Write| __

No of sent packets

40038| 37| 0x25| Sent packets MSB| Read & Write
30051| 50| 0x32| Inputs| Read| Input state; Bit is set if value ≠ 0
30052| 51| 0x33| Outputs| Read| Output state; Bit is set if value ≠ 0
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40053

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52

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0x34

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Current analog output 1

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Read & Write

| Value of analog output:

inμA for

0 – 20mA (max 20480)

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in ‰ for

4-20mA (max 1000)

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40054

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53

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0x35

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Voltage analog output 2

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Read & Write

| Value of analog output:

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in mV (max 10240)

40055| 54| 0x36| Counter 1 LSB| Read & Write| __

32-bit counter 1

40056| 55| 0x37| Counter 1 MSB| Read & Write
40057| 56| 0x38| Counter2 LSB| Read & Write| __

32-bit counter  2

40058| 57| 0x39| Counter 2 MSB| Read & Write
40059| 58| 0x3A| CounterP 1 LSB| Read & Write| __

32-bit value of captured counter 1

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40060

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59

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0x3B

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CounterP 1 MSB

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Read & Write

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40061

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60

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0x3C

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CounterP 2 LSB

| __

Read & Write

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32-bit value of captured counter 2

40062| 61| 0x3D| CounterP 2 MSB| Read & Write
40063| 62| 0x3E| Catch| Read & Write| Catch counter
40064| 63| 0x3F| Status| Read & Write| Captured counter
40065| 64| 0x40| Default value of 1 analog current output| Read & Write| The default of analog output set at power supply and due to activation of watchdog.
Address Modbus Dec Hex| Register Name| Access| Description
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40066| 65| 0x41| Default value of 2 analog voltage output| Read & Write| The default of analog output set at power supply and due to activation of watchdog.
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40067

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66

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0x42

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Current analog output 1 configuration

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Read & Write

| Current analog output configuration:

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0 – OFF

2 – current output 0-20mA 3 – current output 4-20mA

40068| 67| 0x43| Voltage analog output 2 configuration| Read & Write| 0 – OFF

1 – voltage output

40069| 68| 0x44| Counter Config 1| Read & Write| Counters configuration:

+1 – time measurement (if 0 counting impulses)

+2 – autocetch counter every 1 sec

+4 – catch value when input low

+8 – reset counter after catch

+16 – reset counter if input low

+32 – encoder

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40070

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69

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0x45

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Counter Config 2

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Read & Write

Bit access

Modbus Address| Dec Address| Hex Address| Register Name| Access| Description
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801| 800| 0x320| Input 1| Read| Input 1 state
802| 801| 0x321| Input 2| Read| Input 2 state
817| 816| 0x330| Output 1| Read| Current Analog Output state; Bit is set if value ≠ 0
818| 817| 0x331| Output 2| Read| Voltage Analog Output state; Bit is set if value ≠ 0
993| 992| 0x3E0| Capture 1| Read & Write| Capture counter 1
994| 993| 0x3E1| Capture 1| Read & Write| Capture counter 1
1009| 1008| 0x3F0| Captured 1| Read & Write| Captured value of counter 1
1010| 1009| 0x3F1| Captured 2| Read & Write| Captured value of counter 2

Configuration software: Modbus Configurator is software that is designed to set the module registers responsible for communication over Modbus network as well as to read and write the current value of other registers of the module. This program can be a convenient way to test the system as well as to observe real-time changes in the registers. Communication with the module is done via the USB cable. The module does not require any drivers

Configurator is a universal program, whereby it is possible to configure all available modules.

Manufactured for: Aspar s.c.
ul. Oliwska 112
POLAND
ampero@ampero.eu
www.ampero.eu
tel. +48 58 351 39 89; +48 58 732 71 73

References

• Ampero Shop
• ASPAR s.c.

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