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8-6 Field Control™ Genius® Bus Interface Unit User’s Manual
–
October 1999 GFK-0825F
8
Fault Byte 3
7654 32 10
byte 2
Fault record number (always 0)
Number of fault records (always 1)
Fault Bytes 4 and 5
Fault bytes 4 and 5 (bytes 3 and 4 of the datagram) identify the reference offset (within the Bus
Interface Unit itself) assigned to the faulted module. This is an internal reference, not a Series 90-
70 reference.
7654 32 10
byte 3
Diagnostic reference address, LSB
7654 32 10
byte 4
Diagnostic reference address, MSB
Fault Bytes 6 and 7
Fault bytes 6 and 7 (datagram bytes 5 and 6) are interpreted by the Series 90-70 Bus Controller
automatically. They are not relevant to other types of host.
7654 32 10
byte 5
7654 32 10
byte 6
Number of Series 90-70 fault entries to set (bit 7 = 1)
OR: Fault byte mask for S90-70 Bus Controller dual
port (bit 7 = 0).
Fault entire I/O module
Entity offset into dia
g
nostic table
Fault entire Bus Interface Unit