Download eEXRM100e - LIYAN PLC

<< Protocol format of Computer link >> Format 1
Description
Control protocol
Transmission sequence
Sum check
code
Character
area A
Message
wait time
Command
PC No.
Sum check
code
ETX
Character
area B
PC No.
PC No.
or
Error
code
NAK
Sum check
code
Character
area C
Message
wait time
Command
PC No.
Station
No.
ENQ
PC No.
Station
No.
PC No.
Transmission sequence
Station
No.
ACK
Programmable
controller
Station
No.
Note:
♦ Command code: only BR, BW, BT, WR, WW, WT, and
TT are effective
♦ Character area: only D, X, and Y are effective
Station
No.
STX
Programmable
controller
Computer
To write data
from the
computer to the
programmable
controller
Station
No.
Computer
ENQ
To read data
from the
programmable
controller to the
computer
or
Error
code
NAK
<< Protocol format of Computer link >> Format 4
Description
Control protocol
Transmission sequence
L
C
F
R
Sum check
code
Character
area A
Message
wait time
Command
PC No.
Computer
Station
No.
ENQ
PC No.
L
F
C
R
Error
code
F
R
Station
No.
ACK
Station
No.
NAK
Note: About more detailed information, please refer to user’s manual of Computer Link.
F
R
L
F
C
R
Error
code
PC No.
L
C
F
R
or
L
C
ETX
PC No.
Station
No.
NAK
L
C
Transmission sequence
Sum check
code
Character
area C
Message
wait time
Command
PC No.
Station
No.
ENQ
Programmable
controller
Sum check
code
Character
area B
or
Computer
To write data
from the
computer to the
programmable
controller
PC No.
Programmable
controller
Station
No.
STX
To read data
from the
programmable
controller to the
computer