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5-82 Field Control™ Genius® Bus Interface Unit User’s Manual
–
October 1999 GFK-0825F
5
If you prefer to change the BIU table mapping, length, or reference value, press F3 (change). Then
press F3 to select a data table (data type).
S:1 I I
Select table
tgl entr
To configure the selected data type, press F4 (entr). You can edit the length on this screen.
S:1 I I:024
Select length
clr entr
Enter the new length from the keypad. Valid values are:
0, 8, 16, or 24 (bits) for discrete input (data type I) data.
0, 8, or 16 bits for discrete output (data type Q) data.
up to 8 words for analog output (data type AQ) data
If you enter a length of zero, the HHM displays
Unassigned
for that data type.
If you enter an invalid length, the HHM prompts
:
BAD LENGTH ERR. Data must be contained
within byte boundaries; entries for length and reference address are automatically adjusted if
needed. Lengths are adjusted down and reference addresses are adjusted down. For example, a
length of 18 would be decreased to 16 and a starting address of 5 would be decreased to 1.
After entering a valid length, the offset (starting reference address) screen appears. The BIU
automatically supplies the next available address for the selected data type. You can press F4
(enter) to accept the default value, or enter a new value from the keypad. Press the F4 (enter) key
after entering a new offset.
S:1 I I:024
Ref Addr 00481
< > clr entr
Module reference addresses for each data type must be greater than or equal to the starting
addresses listed in the BIU map. If you enter an invalid address, the HHM prompts: BAD REF
ADDRESS.
Use the F2 ( > ) key to display the screen for the module's analog output data