FPΣ
9.5 1:N Communication
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9.5 1:N Communication
This section explains about the 1:N communication of general-purpose serial
communication.
9.5.1 Overview of 1:N Communication
The FPΣ and the external unit with the unit number are connected using an RS485
cable. Using the protocol that matches the external unit, the F159 (MTRN) instruction
is used to send and receive data.
FPΣ
Data register (DT)
RS485
Received data
Data is received into received buffer.
Transmitted data
Data transmission using F159 (MTRN) instruction
Data is sent and received
through the data registers.
Figure 196: FPΣ General-purpose serial communication (1:N communication)
9.5.2 Communication Cassette Used with 1 : N Communication
Thefollowingtypesofcommunicationcassettescanbeusedwith1:Ngeneral-purpose
serial communication.
Name Description Part No.
FPΣ Communication cassette
1-channel RS485 type
This communication cassette is a 1-channel unit with a
two-wire RS485 port. It supports 1 : N computer links (C-
NET), general-purpose serial communication, and a PLC
link.
FPG-COM3
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