Panasonic LP-GS Series Serial Communication Command Manual page 21

⿎ Connecting to external control devices
• To connect the laser marker to the PC for control, use a commercially available RS-232C straight cable (laser marker
side: 9pin male).
• In case of connecting to PLC, a type of the cable (straight or cross) differs depending on a manufacturer or a model.
Please follow the PLC manual.
• To connect RS-232C terminal without using a commercially available RS-232C cable, connect only 3 signals of RxD,
TxD and GND and do not use other signals on the laser marker side.
• You may need a signal line connection (loop back line) other than RxD (RD), TxD (SD) or GND on the external control
device side depending on the specifications of the external control device. Read the instruction manual of the external
control device and connect it to the laser marker appropriately.
Connection example
Terminal No.
* The loop back wiring on the external control device side shown in the above figure is just an example. The wiring method
varies depending on the specifications of each external control device. Read the instruction manual of the external
control device and connect it to the laser marker appropriately.
RS-232C port
(Laser marker)
Signal
Straight cable
2 TxD
3 RxD
5 GND
External control devise
Signal
RxD
TxD
GND
DCD
DTR
DSR
*
RTS
CTS
ME-LPGS-SR-5
Terminal No.
2
3
5
1
4
6
7
8
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