14
3 PLC connection
This chapter will introduce the connection method of OP and PLC.
The communication steps of PLC and OP:
1. Choose the PLC type communicating with OP. Check if the communication parameters of
OP and PLC are the same. The station no. of each part in the OP program should be same to
PLC.
2. Please disconnect the OP cable with PC after finish the downloading.
3. Connect OP and PLC with PLC cable, power on them, OP starts to work.
3-1．Xinje XC series PLC
3-1-1．Connection unit
Series
CPU
Connected
module
Port Cable Choose PLC type in OP20
XC
XC1
XC2
XC3
XC5
XCM
XCC
CPU
RS232
Diagram 1
Xinje XC series
RS485
Diagram 2
3-1-2．Communication parameter
OP software default settings:
Parameter Recommend
Settings
Choices of settings Note
PLC model XC series FC/XC series Choose correct PLC model
communicating with OP
Port RS232 RS232/RS485
Data bit 8 7/8 Accord with PLC port settings
Stop bit 1 1/2 Accord with PLC port settings
Parity Even parity Even /odd/no parity Accord with PLC port settings
Baud rate 19200 4800/38400/9600/115200
/19200/187500
Accord with PLC port settings
Station no. 1 0~255
Default communication parameters of Xinje XC series PLC: 19200, 8, 1, even parity, station
no.1.
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