Summary of Contents for Modbus SFAR-S-8AI2DO
- Page 1 SFAR-S-8AI2DO User Manual Expansion Module – 8 Analog Inputs, 2 Digital Outputs Global Control 5 Sp. z o.o. Warsaw, Poland www.gc5.pl...
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Page 2: Table Of Contents
2.3. Dimensions of the product ..................... 6 3.1. Grounding and shielding ....................6 3.2. Network termination ......................7 3.3. Setting Module Address in RS485 Modbus Network ..........7 3.4. Types of Modbus registers ..................... 8 3.5. Communication settings ....................8 3.5.1. - Page 3 SFAR-S-8AI2DO User Manual Thank you for choosing our product. This manual will help you with proper handling and operating of the device. The information included 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.
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Page 4: Purpose And Description Of The Module
2.1. Purpose and description of the module SFAR-S-8AI2DO module allows measurement of voltages and currents. Values are read via RS485 (Modbus), so we can easily integrate the module with popular PLCs, HMI or PC equipped with the appropriate adapter. The device has a set of 8 Analog Inputs measurements. In addition, the module is equipped with 2 configurable Digital Outputs. -
Page 5: Technical Specifications
Mini USB Height 119.1 mm Size Length 101 mm Width 22.6 mm Interface RS485 Up to 128 devices Power consumption with active Modbus transmission, all outputs on and high state on all inputs Version 3.0 www.gc5.pl Page 5 / 18... -
Page 6: Dimensions Of The Product
SFAR-S-8AI2DO User Manual Table 1 - Technical specifications 2.3. Dimensions of the product The appearance 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. -
Page 7: Network Termination
0 to 31. Addresses from 32 to 255 can be set via RS485 or USB. Addr Addr Table 2 – Setting Module Address in RS 485 Modbus Network Version 3.0 www.gc5.pl Page 7 / 18... -
Page 8: Types Of Modbus Registers
3.5. Communication settings The data stored in the module’s memory is given in the 16-bit registers. The access to registers happens via Modbus RTU or Modbus ASCII. 3.5.1. Default settings You can restore the default configuration by the switch SW6 (see 3.5.2 - Restore the default... -
Page 9: Configuration Registers
Data Bits MSB 8 – 8 data bits 40006 0x05 Response delay Time in ms 0 – RTU 40007 0x06 Modbus Mode 1 – ASCII Table 4 - Configuration registers Indicators Picture 2 - Indicators Version 3.0 www.gc5.pl Page 9 / 18... -
Page 10: Block Diagram
Indicator 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. Inputs state LED indicates that the signal to input is connected. Outputs state LED indicates that the output is on. -
Page 11: Connection Of Voltage Measurement
5.2.2. Connection of voltage measurement Picture 5 – Connection of voltage measurement 5.3. Connection of digital outputs 5.3.1. Connection of PNP output Picture 6 – Connection of PNP output 5.3.2. Connection of NPN output Table 6 – Connection of NPN output Version 3.0 www.gc5.pl Page 11 / 18... -
Page 12: Quick Connect
5.4. Quick Connect Quick Connect is an unique feature of modules that allows you to quickly connect group of devices with a flat ribbon cable. Thanks to this solution, it is enough to connect power and RS485 communication to one of the devices in the group and the others will be powered and communicated with ribbon cable. - Page 13 Selecting the input mode Each input can be used to measure the voltage - the default or the current one. To change the operating mode it is necessary to modify software settings as well as position of the jumpers inside the module as shown below. Picture 9 –...
- Page 14 Analog filtering If the measured signal is interrupted it is possible to eliminate the disruptions by switching the lowpass filter on. It is possible to configure the filter for all inputs (it is not possible to enable the filter for only one input). The filter parameter corresponds to the filter time constant.
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Page 15: Registered Access
Parity bit 40006 0x05 Response Delay Read & Write Response delay in ms 40007 0x06 Modbus Mode Read & Write Modbus Mode (ASCII or RTU) Analog filtering configuration 40010 0x09 Analog filtering Read & Write 8.Analog filtering Received packets 40033 0x20 Read &... - Page 16 0 – alarm due to the current analog signal value 40083 0x52 Alarm settings 5 Read & Write 1 – Remember the value of the alarm, until reset by the master via Modbus 40084 0x53 Alarm settings 6 Read & Write 40085...
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Page 17: Bit Access
Modbus Dec Register Name Access Description Alarm output settings 0 – output is set by PLC +1 – value from input 1 +2 – value from input 2 +4 – value from input 3 40095 0x5E Output 1 settings Read & Write +8 –... - Page 18 Table 9 - Bit access 11. Software configuration Modbus Configurator is the type of software which is designed to set the communication module registers over Modbus network as well as to read and write the current value of other registers of the module. It’ s a convenient way to test the system as well as to observe real-time changes in the registers.
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