Applicable Frames - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
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
2
3
4
5
6
7
Header
8
Header
9
Header
10
Header
11
Header
12 Header
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.
Header
ch0 D8380 (lowest-order byte)
ch1 D8410 (lowest-order byte)
ch2 D8430 (lowest-order byte)
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 (
Caution
Set the header before driving the RS2 instruction. Do not change the setting while the RS2 instruction is
being driven.
Data
Data CR+LF
Data Terminator
Data Terminator
Data Terminator
Data Terminator
Data
Data CR+LF
Data Terminator
Data Terminator
Data Terminator
Data Terminator
Header 1 Header 2
D8380 (highest-order byte)
D8410 (highest-order byte)
D8430 (highest-order byte
) is used to set the headers.
in 1-byte units
8 Creating Programs (RS2 Instruction)
CR+LF
Sum check
Sum check CR+LF
CR+LF
Sum check
Sum check CR+LF
Header 3
D8381 (lowest-order byte)
D8411 (lowest-order byte)
D8431 (lowest-order byte)
8.2 How to Use RS2 Instruction
Header 4
D8381 (highest-order byte)
D8411 (highest-order byte)
D8431 (highest-order byte)
Apx.A
F-63
A
B
C
D
E
F
G
H
I