SfAR-1M-4DI User Manual Table of Contents Introduction ..........................3 Revision History..........................3 Safety Rules..........................4 Module Features........................5 Purpose and Description of the Module ...................5 Technical Specification ........................5 Dimensions ............................6 Communication........................7 Grounding and Shielding.......................7 Network Termination........................7 Types of Modbus Functions......................7 Communication Settings........................8...
SfAR-1M-4DI User Manual 1 Introduction 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.
SfAR-1M-4DI User Manual 2 Safety Rules • Improper wiring of the product can damage it and lead to other hazards. Make sure that the product has been correctly wired before turning the power on. • Before wiring or removing/mounting the product, make sure to turn the power off.
3 Module Features 3.1 Purpose and Description of the Module The SfAR-1M-4DI module is an innovative device that provides a simple and cost-effective extension of the number of lines of input in popular PLCs. The module has 4 digital inputs with configurable timer/counter option, which allows to connect two encoders.
SfAR-1M-4DI User Manual Temperature Work -20°C to +65°C Storage -40°C to +85°C Connectors Power supply 3 pin Communication 3 pin Inputs 2 x 3 pin Configuration mini USB Size Height 90 mm Length 56.4 mm Width 17.5 mm Interface RS485 Up to 128 devices Table 2.
SfAR-1M-4DI User Manual 4 Communication 4.1 Grounding and Shielding In most cases, I/O modules will be installed in an enclosure along with the other devices, which generate electromagnetic radiation. Relays, contactors, transformers, motor invertors, etc., are examples of such devices. Radiation can induce electrical noise into both power and signal lines, as well as direct radiation into the module.
SfAR-1M-4DI User Manual Type Beginning Address Variable Access Modbus Command 40001 Output Registers Registered 4, 6, 16 Read/write Table 3. Types of Modbus functions supported by the module 4.4 Communication Settings The data stored in the module's memory is given in the 16-bit registers. The access to registers is via Modbus RTU or Modbus ASCII.
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SfAR-1M-4DI User Manual Modbus Address Decimal Address Hex Address Name Values 40004 0x03 Data Bits 7 – 7 data bits 8 – 8 data bits 40006 0x05 Response Delay Time in ms 40007 0x06 Modbus Mode 0 – RTU 1 – ASCII Table 5.
SfAR-1M-4DI User Manual 5 Indicators Figure 2. Indicators Indicator Description The LED indicates that the module is correctly powered The LED lights up when the unit received the correct packet and sends the answer DI1, 2, 3, 4 The LED indicates that on the input is high state Table 6.
SfAR-1M-4DI User Manual 6.2.2 AC Power Connection Figure 5. AC power connection 6.3 Communication Bus Connection Figure 6. Communication bus connection 6.4 Connection of Digital Inputs Figure 7. Connection of digital inputs www.ismacontrolli.com DMP269en | 3rd Issue rev. 1 | 05/2022...
SfAR-1M-4DI User Manual 8 Configuration Software The SfAR 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 is a convenient way to test the system as well as to observe real-time changes in the registers.
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