Panasonic LP-RH Series, Setup And Maintenance Manual

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141
⿎ Signals and Details of RS-232C connector
Terminal No. Signal Description
1 N.C. Do not use this signal.
2 TxD (SD) Transmission data: Connect RxD (RD) of the external control device
3 RxD (RD) Receiving data: Connect TxD (SD) of the external control device
4 N.C. Do not use this signal.
5 GND (SG) Signal ground: Connect GND (SG) of the external control device
6 N.C. Do not use this signal.
7 N.C.
8 N.C.
9 N.C.
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• Connect the ground wire of an external control device and that of the laser marker to the same point. If a potential
difference occurs between the GNDs of different products, it will cause product failure.
• The GND pin of the RS-232C connector is common to the body of the laser marker.
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• On the system settings screen, select communication command control or code reader linkage function that you use
with the RS-232C port.
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
RxD
TxD
GND
DCD
DTR
DSR
RTS
CTS
2
3
5
1
4
6
7
8
TxD
RxD
GND
2
3
5
RS-232C port
(Laser marker)
External control devise
Straight cable
Signal Signal
*
Terminal No. 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.
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• The pin arrangement (No. 2, No. 3) of the conventional model LP-400 is different from that of the RS-232C port.
ME-LPRH-SM-3