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6 Communication Function
This chapter mainly includes: basic concept of communication, Modbus
communication and free communication.
Relative Instruction
Circuit and soft components
Read and write serial port data
6-1 Summary
XD, XL series PLC main units can fulfill your requirement on communication and network.
They not only support Modbus RTU, but also support Modbus ASCII and field bus X-NET.
XD, XL series PLC offer multiple communication methods, with which you can
communicate with the devices (such as printer, instruments etc.) that have Modbus
communication protocol.
6-1-1 COM port
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