NAiS FP Series, User Manual

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FP
Σ
8.2 Connection Example with External Device
8 - 11
8.2 Connection Example with External Device
This section explains about the connection example with external device for computer
link.
8.2.1 Connection Example with External Device
(1:1 communication with computer)
Outline
To use a 1:1 computer link with a computer, an RS232C cable is used to set up a 1:1
connection between the FP
Σ
and the computer. Communication is carried out by the
PLC sending responses to commands sent from the computer side.
Computer
Command message
Response message
FP
Σ
RS232C
Figure 148: FP
Σ
Computer link-connection example (computer)
Communication cassette used for 1:1 communication
The following types of communication cassettes can be used for 1:1 computer link
communication.
Name Description Part No.
FP
Σ
Communication cassette
1-channel RS232C type
This communication cassette is a 1-channel unit with a
five-wire RS232C port. It supports 1:1 computer links and
general-purpose serial communication. RS/CS control is
possible.
FPG-COM1
FP
Σ
Communication cassette
2-channel RS232C type
This communication cassette is a 2-channel unit with a
three-wire RS232C port. It supports 1:1 computer links and
general-purpose serial communication. Communication
with two external devices is possible.
FPG-COM2