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IO_OPTS and STATUS_OPTS
DI Function Block
IO_OPTS and STATUS_OPTS
These parameters stipulate options about block’s signal processing and mode
transitions.
The settings of these options are made by setting or resetting the respective bits: on =
true, off = false. Table 42 shows the options available in the DI block IO_OPTS.
Table 43 shows the options available in the AO block STATUS_OPTS.
Table 42 IO_OPTS of DI Block
Bit Meaning Description
0 Invert Inverts the on/off status.
Table 43 IO_OPTS of DI Block
Bit Meaning Description
3
Propagate Fault Forward Stipulates the handling of the value and data status of OUT_D
when the quality component of the data status of SIMULATE_D
falls to Bad and the substatus component falls to device failure
or sensor failure.
If this option is true, then it:
❑ Does not generate a block alarm.
❑ Sets the status and value of SIMULATE_D in OUT_D.
If this option is false, then it:
❑ Generates the input failure block alarm.
❑ Set the quality and sub-status components of the status of
OUT_D to Bad and non specific, respectively.
8 Uncertain if Man mode Sets the status of OUT_D to uncertain when in Man mode.
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