Mitsubishi Electric FX3U-232-BD User Manual page 617

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
2. Receive data and amount of data already received
Receive data
M8403
Receiving complete
It is cleared when
header is received.
D8403
Amount of data
already received
D8415
Receiving sum
(calculation result)
Caution
The 8-bit mode is not applicable in RS2 instruction.
Header Data area
DLE STX 35H 36H 37H
D8410 D8410 D200 D200 D201
lowest lowest lowest
highest highest highest
-order -order -order
-order -order
byte byte byte byte byte
2
1
0
00H 35H 6BH A2H DAH
8 Creating Programs (RS2 Instruction)
Sum data . . . . . The order is different
Terminator
38H DLE ETX 45H 44H
Sum Sum
D201 D202 D202
lowest
lowest
highest
highest
-order
-order
-order -order -order
byte
byte byte byte byte
It is set when
receiving is
completed
6
5
4
3
The calculation
result is converted
into ASCII codes,
and compared
EAH EDH
8.2 How to Use RS2 Instruction
from the data area
CR LF
Reset it in a
program
It is cleared
when the
receiving
complete flag
is cleared
00H
A
B
C
D
E
F
G
H
I
Apx.A
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