Communication
FPΣ User's Manual
214
• Using the 1-channel RS485 and 1-channel RS232C combination type communication
cassette (FPG-COM4):
SG
+
-
SD
RD
S
R
G
Left: FPΣ, right: FP0 COM port
SG
+
-
SD
RD
1
2
3
4
5
6
7
8
9
FG
SD
RD
RS
CS
-
SG
-
-
Left: FPΣ, right: FP2/FP2SH COM port
1:1 communication between the FPΣ and another FP series PLC includes two processes:
A. Reading data from remote FP series PLC
B. Writing data to remote FP series PLC
A. Reading data from remote FP series PLC
Procedure of communication
In this example, an FP series PLC (FP...) connected to COM port 1 of another FP series PLC
(FPΣ) stores the value 100 in DT0 and 200 in DT1. The FPΣ sends a command to read the
data register values and receives the response.
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