Serial Port; Ethernet Port - Panasonic HM 700 Series Instruction Manual

Connections

12.3 Serial port

The serial port is used to communicate with the PLC or with another type of controller.
Standards available for the signals in the PLC port connector are: RS232, RS422, RS485. Use the
corresponding communication cable for the connection.
The serial port is software programmable. Make sure you select the appropriate interface in the pro-
gramming software.
RS232
Pin Description
1 RX
2 TX
3 CTS
4 RTS
5 +5V output
6 GND
7
8 SHIELD

12.4 Ethernet port

The Ethernet port has two LED status indicators. They work as shown in the following figure.
Yellow LED
Off: Valid link has not been detected
On: Valid link has been detected
Serial port
1 8
Green LED
On: No activity
Blinking: Activity
20
RS422, RS485
Pin Description
1 CHB-
2 CHA-
3 CHB+
4 CHA+
5 +5V output
6 GND
7
8 SHIELD
For RS485, pins 1-2 and 3-4
must be connected externally.