FPΣ 7.2 Communication Cassette
7-7
1-channel RS485 type (Part No. : FPG-COM3)
This communication cassette is a 1-channel unit with a two-wire RS485 port.
It supports 1:N computer links and general-purpose serial communication.
Abbreviation Name Signal direction
+
Transmission line (+) —
–
Transmission line (–) —
+
Transmission line (+) —
–
Transmission line (–) —
E
Terminal station setting —
Figure 132: FPΣ 1-channel RS485 type communication cassette
7.2.2 Names and Principle Applications of the Ports
The tool port provided as a standard feature of the FPΣ is treated as the COM. 0 port.
The ports in which the communication cassettes are installed are treated as the COM.
1 port and COM. 2 port. The principle applications of the various ports are as described
below.
Port name
When using
only the FPΣ
contorl unit
When the 1-channel
RS232C type has
been added
When the 2-channel
RS232C type has
been added
When the 1-channel
RS485 type has
been added
COM. 0 port
Tool port
Computer link
Tool port
Computer link
Tool port
Computer link
Tool port
Computer link
COM. 1 port
—
Computer link
General-purpose
serial communication
Computer link
General-purpose
serial communication
Computer link
General-purpose
serial communication
PLC link
COM. 2 port
— —
Computer link
General-purpose
serial communication
—
Notes
Communication using MEWTOCOL-COM is possible with
ports and tool ports for which “Computer link” is noted above.
With MEWTOCOL-COM, the same commands are supported
on all three channels, and frames of up to 2,048 bytes (header
<) are supported.
General-purpose serial communication is possible only with
the COM. 1 port and COM. 2 port.
Terminal layout
FPΣ
+
–
E
+
–
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