Aspar Mini Series Manual de usuario
Mini Modbus 4DO
Expansion Module – 4 digital outputs
Version 1.3 User Manual
Manufactured for
Mini Modbus 4DO
User Manual
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.
WAR I G!
Failure to follow instructions can result in equipment damage or impede
the use of the hardware or software.
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1. 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
2. Module Features
2.1. Purpose and description of the module
4DO Module is an innovative device that provides a simple and cost-effective
extension of the number of outputs in popular PLCs.
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 DI rail in accordance with
DI E 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.
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2.2. Technical Specifications
Power upply Voltage 10-38VDC; 20-28VAC
Maximum Current 69 mA @ 12V / 38 mA @ 24V
Digital Outputs
No of outputs 4
Max Voltage 55V
Max current 250mA
Output Type PNP
Temperature Work -10 °C - +50°C
Storage -40 °C - +85°C
Connectors
Power Supply 3 pin
Communication 3 pin
Outputs 2 x 3 pin
Configuration Mini USB
ize
Height 90 mm
Length 56 mm
Width 17 mm
Interface RS485 Up to 128 devices
* Maximum current with active Modbus transmission, all outputs on and high state on all inputs
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2.3. Dimensions of the product
Look and dimensions of the module are shown below. The module is mounted
directly to the rail in the DI industry standard.
3. Communication configuration
3.1. 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.
3.2. 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.
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90
17 56
50
34
Mini Modbus 4DO
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3.3. Types of odbus 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
3.4. Communication settings
The data stored in the modules memory are in 16-bit registers. Access to
registers is via MODBUS RTU or MODBUS ASCII.
3.4.1. Default settings
Parameter Name Value
Address 1
Baud rate 19200
Parity No
Data bits 8
top bits 1
Reply Delay [ms] 0
Modbus Type RTU
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3.4.2. Configuration registers
Modbus Dec Hex Name Values
Address
40003 2 0x02 Baud rate
0 – 2400
1 – 4800
2 – 9600
3 – 19200
4 – 38400
5 – 57600
6 – 115200
other – value 10
40005 4 0x04 Parity
0 – none
1 – odd
2 – even
3 – always 1
4 – always 0
40004 3 0x03 Stop Bits LSB 1 – one stop bit
2 – two stop bits
40004 3 0x03 Data Bits MSB 7 – 7 data bits
8 – 8 data bits
40006 5 0x05 Response delay Time in ms
40007 6 0x06 Modbus Mode 0 – RTU
1 – ASCII
4. Indicators
Indicator Description
O LED indicates that the module is correctly powered.
TX The LED lights up when the unit received the correct packet and sends the answer.
1, 2, 3, 4 LED indicates that the output is on.
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5. Bloc diagram
6. Module Connection
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V+
OUT1
μC
R 485
VCC
GND
GND
485-
485+
OUT2
V+
OUT3
OUT4
Mini Modbus 4DO
User Manual
7. Modules Registers
7.1. Registered access
Modbus Dec Hex Register Name Access Description
30001 0 0x00 Version/Type Read Version and Type of the device
30002 1 0x01 Address Read Module address
40003 2 0x02 Baud rate Read & Write RS485 baud rate
40004 3 0x03 Stop Bits & Data Bits Read & Write No of Stop bits & Data Bits (see 3.4.2)
40005 4 0x04 Parity Read & Write Parity bit
40006 5 0x05 Response Delay Read & Write Response delay in ms
40007 6 0x06 Modbus Mode Read & Write Modbus Mode (ASCII or RTU)
40009 8 0x08 Watchdog Read & Write Watchdog
40013 12 0x0C Default Output State Read & Write Default output state (after power on or
watchdog reset)
40033 32 0x20 Received packets MSB Read & Write No of received packets
40034 33 0x21 Received packets LSB Read & Write
40035 34 0x22 Incorrect packets MSB Read & Write No of received packets with error
40036 35 0x23 Incorrect packets LSB Read & Write
40037 36 0x24 Sent packets MSB Read & Write No of sent packets
40038 37 0x25 Sent packets LSB Read & Write
40052 51 0x33 Outputs Read & Write Output state
7.2. Bit access
Modbus
Address
Dec
Address
Hex
Address Register name Access Description
193 192 0x0C0 Default state of output 1 Read & Write Default state of output 1
194 193 0x0C1 Default state of output 2 Read & Write Default state of output 2
195 194 0x0C2 Default state of output 3 Read & Write Default state of output 3
196 195 0x0C3 Default state of output 4 Read & Write Default state of output 4
817 816 0x330 Output 1 Read & Write Output 1 state
818 817 0x331 Output 2 Read & Write Output 2 state
819 818 0x332 Output 3 Read & Write Output 3 state
820 819 0x333 Output 4 Read & Write Output 4 state
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8. 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.
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