Specifications

Analog Output Modules
258
31007715 6/2008
STB AVO 1250 Data and Status for the Process Image
Representing
the Analog
Output Data
The NIM keeps a record of output data in one block of registers in the process image
and a record of output status in another block of registers in the process image.
Information in the output data block is written to the NIM by the fieldbus master and
is used to update the output module. The information in the status block is provided
by the module itself.
This process image information can be monitored by the fieldbus master or, if you
are not using a basic NIM, by an HMI panel connected to the NIM’s CFG port. The
specific registers used by the STB AVO 1250 module are based on its physical
location on the island bus.
Note: The data format illustrated below is common across the island bus,
regardless of the fieldbus on which the island is operating. The data is also
transferred to and from the master in a fieldbus-specific format. For fieldbus-
specific descriptions, refer to one of the Advantys STB Network Interface Module
Application Guides. Separate guides are available for each supported fieldbus.
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