GE VersaPoint IC220PBI002 User Manual page 145

Example 4, Writing to Object 5FFF, Subindex 0 of a VersaPoint RS-232
Communications Module on Slot 3
Write request (master -> slave) – start fragment
Data (4 Words VC1)
12 03 5F FF 00 14 00 06
Write response (slave -> master)
Data (4 Words VC1)
12 I 00 00 00 00 00 00 00
Write request (master -> slave) – 1
Data (4 Words VC1)
21 02 00 00 24 0D 0A 00
Write response (slave -> master)
Data (4 Words VC1)
21 I 00 00 00 00 00 00 00
Write request (master -> slave) – 2nd continue fragment
Data (4 Words VC1)
22 00 00 00 11 13 00 00
Write response (slave -> master)
Data (4 Words VC1)
22 I 00 00 00 00 00 00 00
Write request (master -> slave) – end fragment
Data (4 Words VC1)
40 00 00 00 00 I 00 00 00
Write response (slave -> master) This write response with service 82
acknowledgment of write request with 12
Data (4 Words VC1)
82 00 I 00 00 00 00 00 00
Clear request (master -> slave)
Data (4 Words VC1)
00 xx xx xx xx xx xx xx
Clear response (slave -> master)
Data (4 Words VC1)
00 00 00 00 00 00 00 00
GFK-1911B Chapter 8 Communications
Data Structure
Write PCP/Slot/Index high/Index
low/Subindex/Length/2 bytes of data
Data Structure
Write response/7 bytes unused
st
continue fragment
Data Structure
Write/7 bytes of data
Data Structure
Write response I 7 bytes unused
Data Structure
Write/7 bytes of data
Data Structure
Write response I 7 bytes unused
Data Structure
Write/4 bytes of data I 3 bytes unused
in the start fragment.
hex
Data Structure
Write response/Status I 6 bytes unused
Data Structure
Clear
Data Structure
Clear response
8
is the
hex
8-25