Panasonic GT Series Manual page 133

Function code
Function code 03 (Read Holding Registers)
Command
Function
GT unit No. code
03H
1 byte 1 byte
Response
Function
GT unit No. code
03H
1 byte 1 byte
Function code 06 (Write to Single Holding Register)
Command
Function
GT unit No. code
06H
1 byte 1 byte
Response
Function
GT unit No. code
06H
1 byte 1 byte
Starting Starting
No. No.
(Higher) (Lower)
1 byte 1 byte
No. of data Data
02(H) (Higher)
1 byte 1 byte
No. No.
(Higher) (Lower)
1 byte 1 byte
No. No.
(Higher) (Lower)
1 byte 1 byte
No. of read No. of read
00(H) 01(H)
1 byte 1 byte
Data Error check
(Lower) (Higher)
1 byte 1 byte
Write data Write data
(Higher) (Lower)
1 byte 1 byte
Write data Write data
(Higher) (Lower)
1 byte 1 byte
Error check Error check
(Higher) (Lower)
1 byte 1 byte
Error check
(Lower)
1 byte
Error check Error check
(Higher) (Lower)
1 byte 1 byte
Error check Error check
(Higher) (Lower)
1 byte 1 byte
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