Rockwell Automation 1794-APB/B FLEX I/O PROFIBUS Adapter Module User Manual - Manual (Page 96)

4–4 Configure the Adapter for Master/Slave Communication
Publication 1794ĆUM057B-EN-P - November 2001
Condensed Format
The condensed format consists of the flags byte and the module key
parameter for each of the eight slots. This parameter dictates which
I/O module must be installed. If at any time the actual module ID
does not match this module key, the slot will be considered in fault
and the following occurs:
•
STATUS LED flashes red/off
•
an error bit in the poll response data is set
•
a diagnostic bit in the Ext_Diag_Data field returned in the Read
DP–Slave Diagnostic Information message response is set
All eight slots must be configured. The size for this format is always
17 bytes (including the flags byte). The condensed format structure
must be repeated for each of the eight slots.
Data format for Condensed Format
Name Size Description
Module Key WORD Module ID # that must be installed 1
1 Only bits 0-12 are used. Bits 13-15 must be zero except when keying
an empty slot where 0FFFFh is used.