Panasonic S-LINK V, User Manual

Page: 65 / 182

65
Chapter 3
Wiring Check
Check of PLC I/O connectors
Check each PLC I/O connector for the following items:
● Check that the PLC I/O connector is applicable for the I/O module manufactured by the PLC manufacturer.
● Check that a PLC input connector is connected to the PLC input module, and a PLC output connector to the
PLC output module.
● Check that the PLC I/O connector numbers are correctly set.
● Check that a connector link cable is used for connection of the PLC input and output connectors to each other.
● Check that a connector cap is attached to the unused PLC I/O connector terminal at the end.
● Check that a control cable is used for connection of PLC I/O connectors to the controller.
● Check that the number of PLC I/O connectors connected to each control cable is 8 connectors or less.
Check of cable for short-circuit
● Use an analogue tester to measure the resistance.
If you use a digital tester, the tester may not indicate correct values.
This is because the polarity of the tester inner circuit is not appropriate.
● Before measurement, disconnect the cable from the terminal block of the controller or the control
board. If the cable is connected, correct measurement values cannot be obtained.
● Before disconnecting the cable, put a mark or lead wire color on the cable. If the cable is discon-
nected without any mark, you may reconnect the cable to a wrong terminal after measurement.
CAUTION
Disconnect the transmission cable from the terminal block of the controller or the control board.
Using an analogue tester, measure the resistance value at the following points:
● Between D and G (Resistance value: Several kΩ or more)
● B24V and 0V (Resistance value: Several kΩ or more)
● B24V and D (Resistance value: Several kΩ or more)
G (Black)
Analog tester
D (White)
0V (Blue)
+24V (Brown)
Transmission cable