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Table 1.4 RS-485(Modbus RTU) communication specifications
Items
Specifications
Communication object Computer used for management, PLC
Communication wiring Shielded twisted pair, Distinguish A/B port
Communication mode Half duplex communication
Concurrent mode Asynchronous communication
Communication speed
9600bps
Wiring distance Within 1000m
Table 1.5 External input and external output communication specifications
Items Specifications
External output voltage
12VDC
External input voltage
5VDC Dry node signal (short circuit or open circuit)
Function and application
With external linkage, provide output and input signal of the switch
Wiring distance Within 70m
1 System Constitution