F-63
FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
8 Creating Programs (RS2 Instruction)
8.2 How to Use RS2 Instruction
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter
Communication
F
Non-Protocol
Communication
(RS/RS2 Instruction)
G
Non-Protocol
Communication
(FX
2N
-232IF)
H
Programming
Communication
I
Remote
Maintenance
Apx.A
Discontinued
models
8.2.1 Applicable frames
Message frames used in communication can be selected by setting the communication format.
The table below shows message frames applicable to the RS2 instruction.
1. Header
When "header provided" is selected in the communication format settings, the values of D8380 and D8381
are used for ch0, and the values of D8410 and D8411 are used for ch1, and the values of D8430 and D8431
are used for ch2.
Up to four headers can be set.
When data is sent, the data set in the devices above is added at the head of the specified send data.
When data is received, receiving begins when the data set in the devices above is received continuously.
Even if "header provided" is selected, headers are not provided if header 1 is set to "00H".
The area before 00H (
in 1-byte units) is used to set the headers.
Caution
Set the header before driving the RS2 instruction. Do not change the setting while the RS2 instruction is
being driven.
1
2
3
4
5
6
7
8
9
10
11
12
Header Header 1 Header 2 Header 3 Header 4
ch0
D8380 (lowest-order byte) D8380 (highest-order byte) D8381 (lowest-order byte) D8381 (highest-order byte)
ch1
D8410 (lowest-order byte) D8410 (highest-order byte) D8411 (lowest-order byte) D8411 (highest-order byte)
ch2
D8430 (lowest-order byte) D8430 (highest-order byte D8431 (lowest-order byte) D8431 (highest-order byte)
Data
Data CR+LF
Data CR+LFTerminator
Data Terminator Sum check
Data Terminator Sum check CR+LF
DataHeader CR+LF
Data TerminatorHeader
DataHeader Terminator CR+LF
DataHeader Terminator Sum check
Header Data Terminator Sum check CR+LF
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