Send/Receive Data And Amount Of Data - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
8.2.3

Send/receive data and amount of data

RS2 instruction can handle send data and receive data while storing two characters in one data register.
M8000
FNC 87
Communication format setting
 Control line not provided
 Headers provided
 Terminators provided [DLE + ETX (D8412: 0310H D8413: 0000H)]
 Sum check provided
 CR + LF added
1. Send data and amount of remaining send data
Send data
M8402
Sending request
Set it in a program.
D8403
Amount of remaining
send data
D8416
Sending sum
F-66
D100 K4
RS2
[DLE + STX (D8410: 0210H D8411: 0000H)]
Header
DLE STX 31H
D8410 D8410 D100
lowest lowest
highest
-order -order
-order
byte byte byte
4
3
00H 31H 63H 96H CAH DAH DDH
K1
D200 K20
Terminator Sum data . . . . . The order is different
Data area
32H 33H 34H DLE ETX
D100 D101 D101 D8412 D8412
lowest lowest
highest highest highest
-order -order
-order -order -order
byte byte byte byte byte
2
1
0
8 Creating Programs (RS2 Instruction)
8.2 How to Use RS2 Instruction
from the data area
44H 44H
Sum
Sum
CR LF
lowest
highest
-order
-order
byte byte
It is automatically reset
when sending is
completed