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FC5A MicroSmart User’s Manual FC9Y-B1268
Expansion RS232C/RS485 Communication Module
The FC5A-SIF2 expansion RS232C communication module and the FC5A-SIF4 expansion RS485 communication module
are expansion modules used for the FC5A series micro programmable controller.
The expansion RS232C/RS485 communication module is mounted on the right of all-in-one 24-I/O type (except 12V DC
power type) or slim type CPU modules. All-in-one 24-I/O type CPU modules can be used with a maximum of three expan-
sion RS232C/RS485 communication modules to expand up to five communication ports. Slim type CPU modules can be
used with a maximum of five expansion RS232C/RS485 communication modules to expand up to seven communication
ports.
For example, the expansion RS232C communication module can be used in the following system. When the CPU module
is connected to a PC and also mounted with expansion RS232C communication modules, the PC can be used to monitor
the CPU operation while the CPU module communicates with multiple RS232C devices, such as printers, operator inter-
faces, and measuring instruments.
For details about these communication functions, see page 25-1 (Advanced Vol.).
System Setup Example
+
—
24VDC
PWR
SD
RD
RS232C
RS
ER
SD
RD
DR
SG
NC
PWR
SD
RD
RS232C
RS
ER
SD
RD
DR
SG
NC
Computer Link Cable 4C
FC2A-KC4C
3m (9.84 ft.) long
To Port 3 (RS232C)
Expansion Communication Port
(communication port on the RS232C
expansion communication module)
HG series Operator Interface
To Port 1 (RS232C)
CPU Module
To Port 4 (RS232C)
Expansion RS232C Communication Module
FC5A-SIF2
Printer
Features
The expansion communication module has four communication functions.
Maintenance Communication
(Computer Link)
When a MicroSmart CPU module is connected to a computer, operating status and I/O status
can be monitored on the computer, data in the CPU can be monitored or updated, and user
programs can be downloaded and uploaded. Run-time program download cannot be used.
User Communication
CPU modules can be linked to remote RS232C or RS485 devices such as computers, printers,
and barcode readers through expansion communication modules, using the user communica-
tion function.
Data Link (Note)
All MicroSmart CPU modules can set up a data link system. One CPU module at the master sta-
tion can communicate with 31 slave stations through an RS485 line to exchange data and per-
form distributed control effectively.
Modbus Communication (Note)
All MicroSmart CPU modules can be used as a Modbus master or slave, and can be connected
to other Modbus devices.
Note:
CPU modules with system program version 220 or higher and FC5A-SIF4 are needed to use data link or Modbus communication.
For the combination of the version numbers and supported protocols, see page A-17.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
