Publication 1756-RM004B-EN-P - October 2000
3-4 MVI Backplane API
The status connection may be used by the processor to determine the
current status of the 1756-MVI module. The first word of the status
input data contains the status bits shown in table 3.C.
The remaining two words of status data are simple counters which are
incremented by the module whenever a message is sent via
MVIbp_SendMessage (word 1) or received via MVIbp_ReceiveMessage
(word 2). These counters may be used for synchronization or diagnostic
purposes.
Table 3.C - Status Input Word 0
Bit Description
0 Module is ready (MVI driver is loaded)
1 Module application is active (MVIbp_Open has been called)
15 Module is faulted (MVIbp_SetModuleStatus called with MVI_MODULE_STATUS_FAULTED
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