Background Diagnostics Execution, Block_Test Parameter; Transmitter Diagnostics - Honeywell ST700 User Manual

Background Diagnostics Execution, BLOCK_TEST parameter

To verify that block and background diagnostics are executing in a particular block:
View the BLOCK_TEST parameter of the block.
•
If the first element of the parameter BLOCK_TEST is incrementing, the block is
executing and the diagnostics are active.
•
If the first element value is not increasing, the block is not executing.

Transmitter Diagnostics

Transmitter faults are grouped into one of these three diagnostic categories and could cause
the following results:
Non-Critical Fault  Transmitter continues to calculate PV output.
1.
Critical Fault  Transmitter drives PV output to failsafe state.
2.
Block Configuration Errors  Incorrect parameter values causes the transmitter to
3.
generate a fault, for example, BLOCK_ERR or MODE_BLK = OOS.
A description of each condition in each category is provided in Table 32, Table 33 and
Table 34. The condition is described, a probable cause is stated and a recommended
corrective action is given for each fault.
Revision 2.0 FOUNDATION Fieldbus ST 700 Pressure Transmitter User's Guide Page 111