Specifications

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4.4 Multilink Connection
For GP-4501TW, some communication drivers do not support multi-link connection (n:1)
via RS-422.
When converting the project file with the setting of the communication driver that does
not support multi-link connection (n:1) via RS-422, the connection is automatically
converted to (1:1).
For the communication drivers that support serial multi-link, see [Which drivers support
serial multilink communication?]
(http://www.pro-face.com/otasuke/files/manual/gpproex/new/device/com_mlnk.htm)
.
4.5 Internal 2-Port feature for Mitsubishi PLC
For GP-4501TW, the internal 2-Port feature for Mitsubishi PLC cannot be used.
If [GP Setup]->[Mode Settings]->[Option]->[Internal 2 port] is selected on
GP-PRO/PBIII, the following message will appear when converting the project file with
the GP-Pro EX Project Converter.