YASKAWA VIPA System SLIO Manual page 181

VIPA System SLIO
Command telegram
Slave address
1byte
Respond telegram
Slave address Function code
1byte 1byte
Read n words 03h, 04h
Command telegram
Slave address
1byte
Respond telegram
Slave address Function code
1byte 1byte
Write 1 bit 05h
Command telegram
Slave address
1byte
Respond telegram
Slave address
1byte
HB300 | CPU | 013-CCF0R00 | en | 19-30
Function code
1byte
Number of
read bytes
1byte
03h: Read n words of master output area 4x
04h: Read n words master input area 3x
Function code
1byte
Number of
read bytes
1byte
Code 05h: Write 1 bit to master output area 0x
A status change is via "Status bit" with following values:
"Status bit" = 0000h ® Bit = 0
"Status bit" = FF00h ® Bit = 1
Function code
1byte
Function code
1byte
Address 1. bit Number of bits
1word
Data 1. byte Data 2. byte
1byte 1byte
max. 250byte
Address 1. bit Number of words
1word
Data 1. word Data 2. word
1word 1word
max. 125words
Address bit
1word
Address bit
1word
Deployment PtP communication
Modbus - Function codes
Check sum
1word
...
Check sum
1word
...
Status bit Check sum
1word
Status bit Check sum
1word
CRC/LRC
1word
Check sum
CRC/LRC
1word
CRC/LRC
1word
Check sum
CRC/LRC
1word
CRC/LRC
1word
CRC/LRC
1word
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