SDM-6RO Expansion Module
Product Information
The SDM-6RO module is an innovative device that provides a
simple and cost-effective extension of the number of lines of
output with high current-carrying capacity. The module has 6 relay
outputs, each with three terminals: common (COM), normally open
(NO), or normally closed (NC). This module is connected to the
RS485 bus with twisted-pair wire. Communication is via MODBUS RTU
or MODBUS ASCII. The use of a 32-bit ARM core processor provides
fast processing and quick communication. 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
- Power Supply Voltage: 10-30 VDC; 10-28VAC
- Maximum Current*:
- DC: 200 mA @ 24VDC
- AC: 250 mA @ 24VAC
- Maximum power consumption:
- DC: 4.8W
- AC: 6VA
- No of outputs: 6
- The maximum current and voltage (resistive load):
- 5A 250V AC
- 10A 24V DC
- Work temperature: -20°C to 60°C
- Storage temperature: -40°C to 85°C
- Power Supply connectors: 2 pins
- Communication connectors: 3 pins
- Outputs connectors: 2x 10 pins
- Configuration interface: Mini USB
- Height: 110 mm
- Length: 62 mm
- Width: 88 mm
- RS485: Up to 128 devices
- * Maximum current with active Modbus transmission, all outputs
on
Product Usage Instructions
Please read the following instructions carefully before using
the SDM-6RO module:
Safety rules
Follow the safety rules provided in the user manual to avoid
equipment damage or injury.
Communication configuration
For proper communication configuration, follow the grounding and
shielding instructions provided in the user manual. 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 bidirectional. In the case of
an RS485 twisted pair cable this termination is typically 120
Ω.
Module Features
The SDM-6RO module has 6 relay outputs, each with three
terminals: common (COM), normally open (NO), or normally closed
(NC). The module is connected to the RS485 bus with twisted-pair
wire. Communication is via MODBUS RTU or MODBUS ASCII. 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
Refer to the technical specifications provided in the user
manual for details on power supply voltage, maximum current,
maximum power consumption, number of outputs, maximum current and
voltage (resistive load), work temperature, storage temperature,
power supply connectors, communication connectors, outputs
connectors, configuration interface, height, length, width, and
RS485.
SDM-6RO
Expansion Module 6 relay outputs
Version 1.3
User Manual
Manufactured for
SDM-6RO
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 judgement 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.
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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
The SDM-6RO module is an innovative device that provides a simple and cost-effective extension of the number of lines of output with high current-carrying capacity.
The module has 6 relay outputs. Each relay has three terminals: common (COM), normally open (NO) or normally closed (NC), so that the unit is very flexible.
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.
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2.2. Technical Specifications
Power Supply Relay outputs Temperature Connectors
Size Interface
Voltage
10-30 VDC; 10-28VAC
Maximum Current*
DC: 200 mA @ 24VDC AC: 250 mA @ 24VAC
Maximum power consumption DC: 4.8W; AC: 6VA
No of outputs
6
The maximum current and 5A 250V AC
voltage (resistive load)
10A 24V DC
Work
-10 °C – +50°C
Storage
-40 °C – +85°C
Power Supply
2 pins
Communication
3 pins
Outputs
2x 10 pins
Configuration
Mini USB
Height
110 mm
Length
62 mm
Width
88 mm
RS485
Up to 128 devices
* Maximum current with active Modbus transmission, all outputs on
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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 DIN industry standard. Power connectors, communication and IOs are at the bottom and top of the module. USB connector configuration and indicators located on the front of the module.
91 45 42,3
35 110
88
6 2 4 8 , 5 6
110
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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 bidirectional. In the case of an RS485 twisted pair cable this termination is typically 120 .
3.3. Setting Module Address in RS485 Modbus Network
The following table shows how to set switch to determine the address of the module. The module address is set with the switches in the range of 0 to 127. Addresses From 128 to 255 can by set via RS485 or USB.
Switch
Adress
SW1
+1
SW2
+2
SW3
+4
SW4
+8
SW5
+16
SW6
+32
SW7
+64
Ex. if switches 1, 3 and 5 are on than module addres is: Address = 1 + 4 + 16 = 21
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3.4. Types of Modbus Registers
There are 4 types of variables available in the module.
Type Beginning adress
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
3.5. Communication settings
You can restore the default configuration by the switch SW8 (see 3.5.2 – Restore the default configuration)
3.5.1. Default settings
You can restore the default configuration by the switch SW8 (see 3.5.2 – Restore the default configuration)
Boud rate
19200
Pariti
Nie
Data bits
8
Stop bits
1
Reply Delay [ms]
0
Modbus Type
RTU
3.5.2. Restore the default configuration
To restore the default configuration: · turn off the power
· turn on the switch SW8
· turn on the power
· when power and communication LED start blinking alternately than turn off the switch SW8
Caution! After restoring the default configuration all values stored in the registers will be cleared as well.
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3.5.3. Configuration registers
Modbus Dec Hex 40003 2 0x02
40005 4 0x04
40004 40004 40006 40007
3 0x03 3 0x03 5 0x05 6 0x06
Name
Baud rate
Parity Stop Bits LSB Data Bits MSB Response delay Modbus Mode
Values
0 2400 1 4800 2 9600 3 19200 4 38400 5 57600 6 115200 other value * 10
0 none 1 odd 2 even 3 always 1 4 always 0
1 one stop bit 2 two stop bit
7 7 data bits 8 8 data bits
Time in ms
0 RTU 1 ASCII
3.5.4. 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
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4. Switches
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ON 12 3 4 5 6 7 8
Switch 1 2 3 4 5 6 7
8
Function Module address +1 Module address +2 Module address +4 Module address +8 Module address +16 Module address +32 Module address +64
Restoring default settings
Description
Setting module address from 0 to 127
Restoring default settings (see 3.5.1 – Default settings i 3.5.2 – Restore the
default configuration).
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5. Front panel removing
To remove the panel and gain access to the switch, you must pry open the panel using a thin tool (eg a small screwdriver) as in the picture below.
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6. Indicators
Outputs 1 3 state
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Communication
ON 12 3 4 5 6 7 8
Outputs 4 6 state
mini USB configuration
connector
Power supply
Indicators
Description
Power supply LED indicates that the module is correctly powered.
Communication The LED lights up when the unit received the correct packet and sends the answer.
Outputs state LED indicates that the output is on.
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7. Module Connection
7.1. Relay outputs
Connection of electro-valve
SDM-6RO
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Connection of resistive load
7.2. Communication, power supply
Communication
Power supply, DC Voltage 24VDC
Power supply, AC voltage 24VAC
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8. Modules Registers 8.1. Registered access
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Modbus Dec 30001 0 30002 1 40003 2 40004 3 40005 4 40006 5 40007 6 40009 8
40013 12
40033 32 40034 33 40035 34 40036 35 40037 36 40038 37 40052 51
Hex
Register Name
0x00 Version/Type
0x01 Switches
0x02 Baud rate
0x03 Stop Bits & Data Bits
0x04 Parity
0x05 Response Delay
0x06 Modbus Mode
0x08 Watchdog
0x0C Default Output State
0x20 Received packets LSB 0x21 Received packets MSB 0x22 Incorrect packets LSB 0x23 Incorrect packets MSB 0x24 Sent packets LSB 0x25 Sent packets MSB 0x33 Outputs
Access
Description
Read
Version and Type of the device
Read
Switches state
Read & Write
RS485 baud rate
Read & Write No of Stop bits & Data Bits
Read & Write
Parity bit
Read & Write
Response delay in ms
Read & Write Modbus Mode (ASCII or RTU)
Read & Write
Watchdog
Read & Write
Default output state (after power on or watchdog reset)
Read & Write Read & Write
No of received packets
Read & Write Read & Write
No of received packets with error
Read & Write Read & Write
No of sent packets
Read & Write
Output state
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8.2. Bit access
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Modbus Address
193 194 195 196 197 198 817 818 819 820 821 822
Dec
Hex
Address Address
Register name
192
0x0C0 Default state of output 1
193
0x0C1 Default state of output 2
194
0x0C2 Default state of output 3
195
0x0C3 Default state of output 4
196
0x0C4 Default state of output 5
197
0x0C5 Default state of output 6
816
0x330 Output 1
817
0x331 Output 2
818
0x332 Output 3
819
0x333 Output 4
820
0x334 Output 5
821
0x335 Output 6
Access
Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write Read & Write
Description
Default state of output 1 Default state of output 2 Default state of output 3 Default state of output 4 Default state of output 5 Default state of output 6
Output 1 state Output 2 state Output 3 state Output 4 state Output 5 state Output 6 state
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9. 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.
USB
PC
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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Table of Contents
1. Safety rules……………………………………………………………………………………………………………………..3 2. Module Features………………………………………………………………………………………………………………3
2.1. Purpose and description of the module…………………………………………………………………………3 2.2. Technical Specifications…………………………………………………………………………………………….4 2.3. Dimensions of the product………………………………………………………………………………………….5 3. Communication configuration……………………………………………………………………………………………6 3.1. Grounding and shielding…………………………………………………………………………………………….6 3.2. Network Termination…………………………………………………………………………………………………6 3.3. Setting Module Address in RS485 Modbus Network……………………………………………………..6 3.4. Types of Modbus Registers…………………………………………………………………………………………7 3.5. Communication settings…………………………………………………………………………………………….7
3.5.1. Default settings………………………………………………………………………………………………….7 3.5.2. Restore the default configuration………………………………………………………………………….7 3.5.3. Configuration registers………………………………………………………………………………………..8 3.5.4. Watchdog function……………………………………………………………………………………………..8 4. Switches………………………………………………………………………………………………………………………….9 5. Front panel removing……………………………………………………………………………………………………..10 6. Indicators………………………………………………………………………………………………………………………11 7. Module Connection………………………………………………………………………………………………………..12 7.1. Relay outputs………………………………………………………………………………………………………….12 7.2. Communication, power supply………………………………………………………………………………….12 8. Modules Registers………………………………………………………………………………………………………….13 8.1. Registered access…………………………………………………………………………………………………….13 8.2. Bit access……………………………………………………………………………………………………………….14 9. Configuration software……………………………………………………………………………………………………15
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POLAND
[email protected] www.ampero.eu
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