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5-22 Field Control™ Genius® Bus Interface Unit User’s Manual
–
October 1999 GFK-0825F
5
Configure a Discrete Input Module
After you "accept" the module into the slot, a screen like this appears:
S:1 I:16
I
tgl entr
Number of
references for
this module type
Assign I/O References for the Module
Specify the I/O references to be used by the module. For most applications, you can
simply have the Bus Interface Unit assign the next available references in that
memory type. Alternatively, you can enter specific references for the module.
A. To assign the next available references, just press F4 (entr).
B. If you want to change to another type of I/O table, press F3 (toggle).
C. If you want to assign specific references, enter the starting address. Press F4
(entr).
For most applications, all module references should fall within the network map
configured for the Bus Interface Unit. For local control, a module can be configured
outside the BIU network map.
In addition, each data type (I, Q, AI, AQ) has a total of 256 bytes allocated within the
BIU. So for each data type, all references must be located within a 256-byte range.
For example, if the starting address for input data configured for the Bus Interface
Unit was I01024, all module inputs would need to be located between I01024 and
I03072. (Discrete references are assigned on byte boundaries).
Module references are automatically assigned by the Bus Interface Unit based on its configured
data addresses and the number of points appropriate for the module type. For example:
S:1 I:16
I00001- I00016
< > del zoom
In the example illustrated above, the Bus Interface Unit assigns 16 references beginning at I00001
to a 16-point input module. In the same system, the next discrete input module in the station would
automatically be assigned references beginning at I00017.
To edit the module's configuration, press F4 (zoom).
S1 Report Faults
YES
S1 Hld Lst State
NO
S1: I:16
I
S1 I:16
I00001- I00016
S1: Mod Type ?
Discrete In 16
F4
F4
F4
S1 Ref Address
I00001
F2
F1
F2
F1
F2