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GFK-0825F Chapter 8 Datagrams 8-5
8
Report Fault Datagram Format
The format of Report Fault datagrams sent by a Bus Interface Unit is shown below. The Series
90-70 Bus Controller interprets this information automatically; no datagram programming is
required.
If the host is a Series Six or Series Five PLC, this information is ignored. If the host is a computer,
this information can be retrieved from the unsolicited datagram queue, and interpreted as needed
for the application.
Subfunction Code: 0F hex
Byte # Description
0 Fault Byte 1
1 Fault Byte 2
2 Fault byte 3
3 Fault byte 4
4 Fault byte 5
5 Fault byte 6
6 Fault byte 7
Fault Byte 1
7654 32 10
byte 0
Fault type, always: 0 0 1 1
Type of module reporting fault:
Suppress alarm (short fault only)
Always 0
00 = discrete output
01 = discrete input
10 = analog output
11 = analo
g
input
Fault Byte 2
7654 32 10
byte 1
Dia
g
nostic table byte number (0 - 63) NOT USED
This value points to an internal table where the
Bus Interface Unit stores the English ASCII
text used by the Hand-held Monitor to create
its fault messa
g
e displays.