I/O Module Functionality - ABB S800 I/O Manual

Section 4 Operation
HART
The HART communication in CI801 and CI840 is based on Profibus-DPV1
services. The maximum size of the HART frame structure is 64 byte in normal
mode and 227 byte in Extended HART mode. For more information see Memory
Maps for CI801 (3BSE036959*) or Memory Maps for CI840 (3BSE025251*).
DPV1 Services
For information about Profibus DPV1 services see Memory Maps for CI801
(3BSE036959*) or Memory Maps for CI840 (3BSE025251*).

I/O Module Functionality

All S800 I/O modules have some common functionality. This section describes
these common functions of the I/O modules.
An S800 I/O module complies with the following framework:
•
•
•
3BSE020926-600
General
– It has a Module Identity (see
– It has a state that can be controlled (see
– It reports status for modules and channels.
Parameters
– It may have configuration parameters for the module and the channels.
– It may have non-volatile parameters for each channel (factory settings).
Dynamic values
– All channels have dynamic values including quality indications.
– All output channels can be read for verification of the performance and
health.
Module Identity on page 66).
Module States
I/O Module Functionality
on page 66).
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