Mitsubishi FX3U-232-BD User Manual

D-40
FX Series PLC User's Manual - Data Communication Edition
Computer Link
6 Control Procedures and Setting Methods
6.4 Basic Formats of Dedicated Protocol
6.4.1 Control procedure format 1
The table below shows the control procedure for format 1.
Description Control procedure (protocol)
When
computer
reads data
from PLC
When
computer
writes data to
PLC
Remarks
1) The sum check code is added only when "sum check code provided" is selected.
The sum check code is not added when "sum check code not provided" is selected.
2) When "sum check code provided" is selected, the sum check is executed only to the character
areas marked with "*" in the figure above.
3) The contents of "Character area A", "Character area B" and "Character area C" vary depending
on the contents of transfer, but do not vary depending on the control procedure format.
→ For details on character contents, refer to "7. Commands".
Computer side
PLC side
E
N
Q
S
T
X
E
T
X
or
or
*
Station
No.
PLC No.
Command
Message
wait time
Character
area A
Sum check
code
Character
area B
*
Sum check
code
N
A
K
Error
code
N
A
K
A
C
K
Transfer order
Station
No.
PLC No.
Station
No.
PLC No.
Station
No.
PLC No.
Station
No.
PLC No.
Transfer order
Computer side
PLC side
E
N
Q
A
C
K
or
*
Character
area C
N
A
K
Station
No.
PLC No.
Command
Message
wait time
Sum check
code
Station
No.
PLC No.
Error
code
Station
No.
PLC No.

Mitsubishi FX3U-232-BD Specifications

General

Brand	Mitsubishi
Model	FX3U-232-BD
Category	Controller
Language	English