Technical Specifications Modbus RTU / ASCII master and slave; Dual serial ports; FLEX bus interface; Hot swappable; Operating temperature 0~60°C.
Functional Features Modbus master and slave mode. Data mapping between Modbus registers and SLC500 controller registers. Communication diagnostics and error logging.
Application Scenarios Legacy plant retrofit, water treatment, manufacturing, connecting SLC500 PLC to Modbus transmitters, meters and variable frequency drives.
Performance Parameters Configurable Modbus polling list; Support multiple Modbus slaves; Serial communication error statistics.
Structural Characteristics FLEX rack plug-in module, dual serial ports, LED indicators for run, serial communication and fault alarm.
Working Principle The module communicates with SLC500 controller over FLEX backplane bus. It runs Modbus RTU/ASCII protocol, reads and writes register data from Modbus field devices and transfers data to SLC500 controller.
Installation Requirements Install module in FLEX I/O rack slot and lock terminals. Use shielded twisted pair for Modbus serial cable. Configure Modbus command list in Prosoft software.
Usage Notes Do not hot swap while power is active. Match baud rate and parity with field Modbus devices. Check module LED indicators for communication faults.
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