YASKAWA IM 053MT Manual page 70

Deployment
Modbus function codes
Code Command
04h Read n Words
05h Write 1 Bit
06h Write 1 Word
0Fh Write n Bits
10h Write n Words
16h Mask 1 Word
17h Write n Words and Read m
Words
Respond of the coupler
70
Description
Read n words master input area 3x
Write 1 bit to master output area 0x
Write 1 word to master output area 4x
Write n bits to master area 0x
Write n words to master area 4x
Mask 1 word in master output area 4x
Write n words into master output area 4x and the respond contains m
read words of the master input area 3x
Byte sequence in a word
High byte
If the slave announces an error, the function code is sent back with a "OR" and 80h.
Without an error, the function code is sent back.
Coupler answer: Function code OR 80h
Function code
If the slave announces an error, the function code is sent back with a "OR" and 80h.
Without an error, the function code is sent back.
01h: Function number is not supported
02h: Addressing errors
03h: Data errors
04h: System SLIO bus is not initialized
07h: General error
1 word
Low byte
® Error & error number
® OK
HB300 | IM | 053-1MT01 | en | 19-40
VIPA System SLIO