1-14 1. Overview
1:n Connection (Multi-drop)
Overview
Multi-drop connection connects one V9 unit to multiple PLCs of the same model as a 1:n connection. (Maximum
connectable units: 31)
You can make settings for 1:n communication in [Communication Setting] for the logical ports PLC1 - PLC8.
A communication port is selectable from CN1, MJ1, and MJ2.
The ladder transfer function is not available for a 1:n connection.
For models that support multi-drop connection, refer to the Connection Compatibility List provided at the end of this
manual or the chapters on individual manufacturers.
V-SFT Ver. 6 Settings
Hardware Settings
Selecting a device to be connected
Select the device for connection from [System Setting] [Hardware Setting].
Maximum length of wiring (V9 to
the terminating PLC) = 500 m
RS-422/RS-485 connection
V9
* The maximum length varies depending on
the connected device.
Check the specifications for each device.
PLC (company A)
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