List Of Modbus Rtu Supported Commands; List Of Modbus Function Codes; Device No. Correspondence Table - Panasonic FP-XH Series User Manual

6.1 List of MODBUS RTU Supported Commands

6.1 List of MODBUS RTU Supported Commands

6.1.1 List of MODBUS Function Codes

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Supported commands (●: Available, Blank: Not available)
Code Name (MODBUS)
01 Read Coil Status
02 Read Input Status
03 Read Hold Register
04 Read Input Registers
05 Force Single Coil
06 Preset Single Register
08 Diagnostics
15 Force Multiple Coils
16 Preset Multiple Registers
22 Mask Write 4X Register
23 Read / Write 4X Registers
(Note 1) During master communication, MODBUS function codes 01, 02, 03 and 04 use F146 (RECV)
instruction, while MODBUS function codes 05, 06, 15 and 16 use F145 (SEND) instruction.

6.1.2 Device No. Correspondence Table

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Correspondence table between MODBUS command reference Nos. and device
Nos.
MODBUS reference Nos.
Coil
Input
Holding register
Input register
(Note 1) The table above indicates correspondence between MODBUS reference Nos. for accessing PLC
through MODBUS protocol from a higher device and operation device Nos. of PLC.
6-2
Name
Read Y / R coils
Read X contact
Read DT
Read WL / LD
Write single Y / R
Write DT1 word
Loopback test
Write multiple Y / R
Write DT multiple words
Write DT mask
Read / write DT
000001-001760
002049-010240
100001-101760
400001-465533
300001-301028
302001-302256
Remarks
(Reference
No.)
0X
1X
4X
3X
0X
4X
-
0X
4X
4X
4X
Data on BUS
(hexadecimal)
0000-06DF
0800-27FF
0000-06DF
0000-FFFC
0000-007F
07D0-08CF
Corresponding
functions
Slave Master
● ●
● ●
● ●
● ●
● ●
● ●
●
● ●
● ●
●
●
PLC device No.
Y0-Y109F
R0-R511F
X0-X109F
DT0-DT65532
WL0-WL127
LD0-LD255
WUME-FPXHCOMG-02