User`s manual
81
FX3U Series Programmable Controllers
User’s Manual - MODBUS Serial Communication Edition
8 Master Specification
8.3 ADPRW Command Parameters
1
Outline
2
Specifications
3
System
Configuration
4
Wiring
5
Communication
Setup
6
Related
Devices and
Comm. Status
7
MODBUS
Standard
Commands
8
Master
Specification
9
Slave
Specification
10
Creating
Programs
8H
Diagnosis
Sub-function: 1H
Restart
Communication
Note: Resets Slave
Listen Only Mode
Sub-function Data:
0x0000: Do Not Reset
Event Log
0xFF00: Reset Event Log
(Slave response: echo of )
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: 2H
Return
Diagnostic Register
0 (fixed)
PLC Destination Device (head address)
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: 3H
Change ASCII Input
Delimiter
Sub-function Data (ASCII Mode
End of Message Character):
00H~FFH
(Slave response: echo of )
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: 4H
Force Listen Only
Mode
Note: Requires the
Restart
Communication
command to reset
(1H)
0 (fixed)
0 (fixed)
Applicable
Devices
D
• R • indexing
Block Length 0
Sub-function: AH
Clear Counter and
Diagnostic Register
0 (fixed)
(Slave response: echo of )
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: BH
Return Bus Message
Counter
0 (fixed)
PLC Destination Device (head address)
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: CH
Return Bus
Communication Error
Counter
0 (fixed)
PLC Destination Device (head address)
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: DH
Return Bus Exception
Error Counter
0 (fixed)
PLC Destination Device (head address)
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: EH
Return Slave
Message Counter
0 (fixed)
PLC Destination Device (head address)
Applicable
Devices
D
• R • indexing
Block Length 1 Point
Sub-function: FH
Return Slave No
Response Counter
0 (fixed)
PLC Destination Device (head address)
Applicable
Devices
D
• R • indexing
Block Length 1 Point
:
Command
Code
:
Device Address/
Sub-command Code
:
Device Count/Sub-command
Data/AND Mask
/ :Source Data /
Destination PLC Device/OR Mask
Applicable Devices: D • R • indexing • K • H
S
1
S
2
S
3
S
4
D
S
3
S
3
S
3