2: MODULE SPECIFICATIONS
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Communication Adapters and Communication Modules
All MicroSmart CPU modules have communication port 1 for RS232C communication. In addition, all-in-one 16- and 24-
I/O type CPU modules have a port 2 connector. An optional communication adapter can be installed on the port 2 connec-
tor for RS232C or RS485 communication. The 10-I/O type CPU module does not have a port 2 connector.
A communication module can be attached to any slim type CPU module to use port 2 for additional RS232C or RS485
communication. When the HMI base module is attached to a slim type CPU module, a communication adapter can be
installed to the port 2 connector on the HMI base module.
When using the RS232C communication adapter or communication module for port 2, maintenance communication, user
communication, and modem communication are made possible. With the RS485 communication adapter or communica-
tion module installed, maintenance communication, data link communication, and user communication (upgraded CPU
modules of slim 20-I/O relay output types and 40-I/O types only) can be used on port 2.
Communication Adapter and Communication Module Type Numbers
Parts Description
(1) Port 2 RS232C or RS485 communication port 2.
(2) Connector Connects to the port 2 connector on the all-in-one type CPU module or HMI base module.
(1) Communication Connector Connects to the slim type CPU module.
(2) Port 2 RS232C or RS485 communication port 2.
(3) Hinged Lid Open the lid to gain access to port 2.
Name Termination Type No.
RS232C Communication Adapter Mini DIN connector FC4A-PC1
RS485 Communication Adapter
Mini DIN connector FC4A-PC2
Screw Terminal Block FC4A-PC3
RS232C Communication Module Mini DIN connector FC4A-HPC1
RS485 Communication Module
Mini DIN connector FC4A-HPC2
Screw Terminal Block FC4A-HPC3
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