ABB S800 I/O Manual page 68

I/O Module Functionality
OSP (Outputs Set as Predefined) State
The OSP state is only used by modules with output channels. If OSP is activated it
is entered from the Operational state in two cases:
•
•
See
Entering the OSP state the module sets its outputs to the predetermined values.
This means "Keep value" or output the configured OSP value. The outputs are kept
unchanged as long as the module stays in the OSP state.
When the PROFIBUS-DP/DPV1 network is operating again the FCI orders the
module out of the OSP state.
After re-entering the Operational state, the outputs are still unchanged until valid
values are written.
Inputs
Outputs
LEDs
Error State
This the state that will be entered if a fault is detected.
Inputs
Outputs
LEDs
Configuration, Parameters
Configuring an I/O module is equal to writing the parameters to it.
The parameters for a module can mainly be divided into configuration parameters
and non-volatile parameters.
68
The supervision time-out on PROFIBUS-DP/DPV1 has elapsed.
The OSP-watchdog expires, no access has been done to the module within
1024 ms (analog) 256 ms (digital).
OSP-Watchdog on page 69.
Not applicable
According to configuration (keep value or OSP value)
Run, OSP (and Warning if diagnostic warning)
Not scanned
Inactive (0 V)
Fault
Section 4 Operation
3BSE020926-600