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5-74 Field Control™ Genius® Bus Interface Unit User’s Manual
–
October 1999 GFK-0825F
5
Assign Data Defaults
For input data types AI and I, you can determine what the BIU should do with the module's data if
the BIU loses communications with the module. Data can either be held at its present values or
defaulted to zero.
You can accept DEFAULT: ZERO with the F4 (enter) key, or press F3 (toggle) then F4 (enter) to
change to DEFAULT: HOLD and save it.
Discrete input (I) data is diagnostic data sent by the module.
S:4 Module-> %I
DEFAULT:ZERO
< > tgl entr
Analog input (AI) data is input data sent by the module.
S:4 Module-> %AI
DEFAULT:ZERO
< > tgl entr
For command data going to the module (data types Q and AQ) which is included within the BIU's
I/O map, you can determine what data the BIU will send to the module if the BIU loses
communications with the network.
S:4 Network-> %Q
DEFAULT:ZERO
< > tgl entr
S:4 Network->%AQ
DEFAULT:ZERO
< > tgl entr