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 scr een.
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 ad ju st ed down and reference addr ess es a r e 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 len gth, the offset (startin g reference address) screen ap pears. The BIU
automatically supplies the next available address for the selected data type. You can press F4
(enter) to accept the defa u l t value, or enter a new value from th e keypad. Press the F4 (enter ) key
after entering a new off set.
S:1 I I:024
Ref Addr 00481
< > clr entr
Module reference addr es ses f or each data type must be greater th an 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 scr een for the module's analog out put data