Lenze I/O system 1000 System Manual - Manual (Page 737)

Appendix
Serial process interfacing
Principle of backplane bus communication
15
l
737 EDSIO1000 EN 7.0
Example of reception without fragmentation: IO size = 60 bytes, length = 40 bytes
Higher−level system EPM−S640/EPM−S650 Description
Byte Value Byte Value
0 0A
h
Information: Data are transferred
without fragmentation.
1 00
h
Information: The telegram does not
contain any additional offset data.
2 00
h
High byte length
3 2A
h
Length of low byte + 2 bytes for RetVal
6 00
h
RetVal high byte
7 00
h
RetVal low byte
6 ... 45 x User data bytes 0 ... 9
46 ... 59 − Not used
¬
0 A0
h
® 0 Acknowledgement, input area free for
new data.