ABB 800xA Operation page 160

S800 Warmstart
Actions On Loop Download
When a loop with an output FCM configured for warmstart is downloaded, the
output mode of the FCM is placed in the MANUAL mode and the output value from
the module is written to its result attribute. When a device loop configured for
warmstart is downloaded, its DEV_CMND attribute is set to NO COMMAND.
Runtime Display Support
During runtime, but not at startup, as modules log in, diagnostic messages are sent
to the diagnostic archive. On the S800 I/O Display, there is a cross reference for a
CCF tag associated with each channel. On this display, the tags for CCF loops with
output FCMs and device loops configured for warmstart that were warm started are
shown with a white background. Note that the loop warm started for a given channel
is the loop whose tag is shown in the S800 I/O Display. If two or more loops
reference the same channel, only the last loop downloaded participates in warmstart
and is listed on the S800 I/O Display.
Operation Actions
With warmstart configured for output FCMs and device loops, the authorized user
should:
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Acknowledge device acquisition diagnostics (at node startup, it is assumed all
modules present are warm started).
Call up the corresponding S800 I/O Display to determine which tags are
affected by warmstart.
Make any necessary modifications to synchronize the control system with the
current outputs.
Commission affected CCF output FCMs by setting their modes to AUTO.
Commission affected CCF device loops by issuing device commands (if
desired).
Section 7 I/O Displays
3BUR002418-600 A