User`s manual

83
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
16H
Mask Write
Register
MODBUS Address:
0000H~FFFFH
AND Mask:
0000H~FFFFH
OR Mask:
0000H~FFFFH
Applicable
Devices
D
• R • K • H •
indexing
Block Length 1 Point
17H
Read/Write
Multiple
Registers
MODBUS Address:
: Write Address
0000H~FFFFH
+1: Read
Address
0000H~FFFFH
Device Count:
: Write Count
1~121
+1: Read Count
1~125
PLC Destination Device
(head address)
: Write Data 1
+1: Write Data 2
+ (Write Count ) -1: Write
Data ( )
+ : Read Data 1
+( ) +1: Read Data 2
+ + (Read Count +1) -1:
Read Data ( +1)
Applicable
Devices
D
• R • indexing
Block Length
Write Count +
Read Count +1
:
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 2
S 2
S 3
S 3
S 4
S 4
S 4 S 3
S 3
S 4 S 3
S 4 S 3
S 4 S 3 S 3
S 3
S 3
S 3