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Honeywell Experion PKS User Manual Page 217

Profibus gateway module.
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Scenario
Prerequisites
Inactivating a
PIOMB and CM1 are
PIOMB
active.
CEE is in the Run state.
C300 and PGM are
communicating.
Inactivating a
PIOMB and CM1 are
CM containing
active.
the
CEE is in the Run state.
PROFIBUS
C300 and PGM are
I/O Channel
communicating.
Block
Changing the
PIOMB and CM1 are
state of the
active.
CEE
CEE is in the Run state.
containing the
C300 and PGM are
PIOMB to
communicating.
"Idle"
Deleting a
PIOMB is inactive.
PIOMB
CM1 is active.
CEE is in the Run state.
C300 and PGM are
communicating.
Deleting a CM
PIOMB and CM1 are
containing the
active.
PROFIBUS
CEE is in the Run state.
I/O Channel
C300 and PGM are
Block
communicating.
Loading a
CM1 is active.
PIOMB
CEE is in the Run state.
C300 and PGM are
communicating.
9 PROFIBUS I/O MODULE (PIOMB) FUNCTION BLOCK
Input type PIOMB
Input process data is set to
fail-safe values.
Strategies react to the fail-
safe values.
PGM continues its
operations and publishes
data to the C300.
Channel data is set to fail-
safe values.
PGM continues its
operations and publishes
data to the C300.
Channel data is set to fail-
safe values.
PGM continues its
operations and publishes
data to the C300.
Strategies are not affected
because the PIOMB has
already been inactivated.
PIOMB closes its PDA
connection with the PGM.
PGM stops publishing data
to the C300 from the
associated PDC.
Channel is deleted when the
CM is deleted.
No changes to the strategies,
the C300 to PGM
connection, or the PIOMB
functions occur.
Channel data is set to fail-
safe values.
Strategies react to the fail-
safe values.
Connection to PGM is open
and input values begin to be
imaged from the PGM to the
C300.
Output type PIOMB
Channel blocks request upstream
blocks to go into initialization.
Upstream Regulatory Control block
realizes it is connected to an I/O
Channel and goes into initialize
manual state.
PGM output to PROFIBUS slave
devices hold their last values.
Channel data is displayed as "NaN"
or "0" and channel status is
displayed as "Bad."
Actual output values and channel
status are available on the DSB.
Control loop stops executing and
calculating new values.
AOC.OP holds its last value.
PIOMB output for that channel
holds its last value.
PGM output and PROFIBUS slave
device for that point hold their last
value.
Control loop stops executing and
calculating new values.
AOC.OP holds its last value.
PIOMB output for that channel
holds its last value.
PGM output and PROFIBUS slave
device for that point hold their last
value.
Strategies are not affected because
the PIOMB has already been
inactivated.
PIOMB closes its PDA connection
with the PGM.
Output of PROFIBUS slave device
goes unpowered as defined by the
DSB.
Channel is deleted when the CM is
deleted.
Last output values are held.
Channel blocks request upstream
blocks to go into initialization.
Upstream Regulatory block realizes
it is connected to an I/O Channel
and goes into initialize manual
state.
No output value for any channel is
sent to the PGM.
Output of PROFIBUS slave device
holds last output.
217

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