GE VersaPoint IC220PBI002 User Manual page 134

8
Example 4, Writing to Object 5FFF; Subindex 0 of a VersaPoint RS-232
Module on Slot 3
This example shows how subindex 00
of a PCP object on an I/O module in a single step.
In the write request data block, 14
This is followed by the data, which is transmitted in this order according to the
structure of the object.
The read response is simple. The data block receives 82
PCP data has been written. 00
A maximum of 58 bytes of PCP data should be transmitted per command.
Write request (master -> slave)
Data
5F 03 30 19 02 5F FF 00
14 00 06 02 00 00 24 0D
0A 00 00 00 00 11 13 00
00 00 00 00 00
Write response (slave -> master)
Data
5F 03 30 19
Read request (master -> slave)
Data
5E 03 30 28
Read response (slave -> master)
Data
5E 03 30 02 82 00
8-14 VersaPoint™ I/O System Profibus-DP NIU User's Manual – August 2005
can be used to write to all the subindices
hex
indicates the length of the subsequent data.
hex
again indicates the OK status.
hex
Data Structure
Write/Slot/Index/Total length of data/Write PCP/Index
high/ Index low/Subindex/Length of PCP data/20 bytes
of object data
Data Structure
Write/Slot/Index/Length
Data Structure
Read/Slot/Index/Maximum length
Data Structure
Read/Slot/Index/Actual length/2 bytes of data (PCP
acknowledgment)
to confirm that the
hex
GFK-1911B