Specifications

Fieldbus Communications Support
70
31004624 8/2009
When the selector value is 02, global diagnostics high byte information is transmitted
as the status word’s low byte value:
NOTE: Errors marked with an asterisk (*) in the global diagnostics tables are fatal
NIM errors. They are caused by internal errors related to either the NIM or a failure
in the island configuration software or hardware.
The detection of these errors will result in the stopping of the island bus. The only
ways to get out of this error state are to cycle the power, reset the island, or clear
the error with the Advantys configuration software.
Communications Diagnostics (Selector 03h)
When the selector value is 03, the communications diagnostic information is
transmitted as the status word’s low byte value:
Bit Meaning
D0* internal triggering protocol error
D1* module data length error
D2* module configuration error
D3 application parameter error
D4 application parameter services or timeout error
D5 reserved
D6 reserved
D7 reserved
*fatal NIM errors
Communication
Diagnostic
Meaning of Value
D0* 1 = low-priority receive queue software overrun error
D1* 1 = NIM overrun error
D2* 1 = island bus-off error
D3* 1 = NIM’s error counter has reached the warning level and error status bit has been set
D4 1 = NIM error status bit has been reset
D5* 1 = low-priority transfer queue software overrun error
D6* 1 = high-priority receive queue software overrun error
D7* 1 = high-priority transfer queue software overrun error
*fatal NIM errors