Honeywell Experion PKS, Руководство пользователя

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6.10.5 Protocol Block icons
The following table summarizes the various appearances that a Protocol Block icon can assume based on view
and current Protocol Blockstate.
If Icon is... Then it indicates...
Project view
gray
Protocol Block a is associated with configured PGM.
Monitoring view
green
Protocol Block is active.
red
Protocol Block is in a failed state.
6.10.6 Protocol Block notifications
When the Protocol Block is active, it generates the following notifications.
Notification Description
Field Network
Failure This notification is generated when the master has lost connection to all PROFIBUS slave devices.
Field Network
Configuration
Failure After the Protocol Block is downloaded, the CRC sum of the parameter NETCONFBIN is calculated.
It is then compared to the NETCONCRCSUM parameter which was calculated by the tools. In there
is a mismatch in this comparison, this notification is generated.
You must modify and reload the field network configuration for this notification to return to normal.
Field Network Tag
Table Failure After the Protocol Block downloaded, the CRC sum of the parameter NETTAGTABLEBIN is
calculated. It is then compared to the value that was loaded along the NETTAGTABLEBIN parameter.
If there is a mismatch in this comparison, this notification is generated.
You must modify and reload the field network configuration for this notification to return to normal.
Input Data Base
Cycle Changed The input data is sampled on every Process Data Access (PDA) base cycle, which is the smallest raw
data cycle seen in PDA opens. The data delivery time which is the time consumed between process
data read from the PROFIBUS network to the end of triggering PDA transport is measured on every
cycle.
The new data sample time is calculated based on the data delivery time and the start time of the earlier
sample. If the data delivery time is longer than minimum cycle (5 ms), the next sample will be
delayed so that there is always a minimum of 5 ms time from the end of data delivery to the start of
the next sample.
If the data delivery takes more than the minimum cycle (5 ms) on three consecutive cycles, this
notification is generated. This notification returns to normal when the data delivery time has been
below minimum cycle (5ms) on three consecutive cycles.
To recover from this, you must reduce either the number of PIOMB connections or the input data read
cycle defined in the PIOMB block.
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