Mitsubishi Electric GT1685 Connection Manual page 58


When using a MELSECNET/10 communication unit (GT15-75J71LP23-Z, GT15- 75J71BR13-
Z) or CC-Link communication unit (GT15-75J61BT13-Z)
Install a MELSECNET/10 communication unit (GT15-75J71LP23-Z, GT15-75J71BR13-Z) or CC-Link communication
unit (GT15-75J61BT13-Z) at the 1st stage of the extension interface.
These communication units cannot be used if installed in the 2nd or higher stage.
For GT16 and the GT155 , the MELSECNET/10 communication unit (GT15-75J71LP23-Z, GT15- 75J71BR13-Z)
and the CC-Link communication unit (GT15-75J61BT13-Z) are not applicable.
Example: When installing a MELSECNET/10 communication unit and a serial communication unit

When using an Ethernet communication unit
An Ethernet communication unit can be installed in any position (1st to 3rd stage) of the extension interface.
For GT16, the Ethernet communication unit is not applicable.
Use the Ethernet interface built in the GOT.
Example: When installing an Ethernet communication unit and a serial communication unit

When using a serial communication unit
A serial communication unit can be installed in any position (1st to 3rd stage) of the extension interface.
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1. PREPARATORY PROCEDURES FOR MONITORING
1.3 Option Devices for the Respective Connection
MELSECNET/10
communication unit
Serial communication unit
Serial communication unit
Ethernet
communication unit
Serial
communication
unit
Ethernet
communication unit
Serial communication unit
Serial
communication
unit