Reloading The Pgm Function Blocks - Honeywell Experion PKS User Manual

11.3 Reloading the PGM function blocks

This sections provides information on reloading the PGM block and its associated function blocks.
Reloading the PGM function block
Reloading the PGM block is generally not frequently performed since you can only change very few parameters
on the PGM platform block after the initial load is successful.
After the reload is successful, the PGM platform block remains in its RUN state.
Reloading the Protocol Block
To reload a Protocol Block, the PGM platform block must be previously loaded. The Protocol Block reload fails
if the PGM platform is not physically present and loaded. However, if the reload fails, appropriates errors are
returned but the load is not canceled.
The reloading of the Protocol Block loads the Protocol Block and its associated field network configuration to
the PGM.
Reloading the DSB function block
To reload a DSB block, the PGM platform block and the Protocol Block to which the DSB is associated must be
previously loaded. The DSB load fails and will be canceled if the following errors are encountered.
• The PGM platform is not present and loaded.
• The slave device address is not configured in the Profibus Network Configuration Tool.
For example, you enter the slave device address as 25 in the Main tab configuration form of the DSB block
but you have not defined any slave device with address 25 in the Profibus Network Configuration Tool. In
such a scenario, you cannot load the DSB block.
However, if the reload fails, appropriate errors are returned but the load will not be canceled.
Attention
• Whenever you reconfigure net tags for a PDC, you must reload the DSB before removing the same net tag in
Sycon and reloading the Protocol Block. This prevents the DSB or the PDC from going into error state during run
time while modifying the net tag usage.
• When a DSB is reloaded, the values of the channels remain the same as they were before the reload. For example,
if channel 0 of a digital module was "ON" before the reload, then it remains "ON" after the DSB is reloaded.
Reloading the PIOMB function block
The PIOMB function block must be reloaded when there is a modification made in the DSB. If the PIOMB
block is not reloaded, then the changes in the DSB does not replicate in the PIOMB.
Attention
You can load the PIOMB block even when the CM is not active.
Reloading the PBHIOMB function block
The PBHIOMB block needs to be reloaded when the changes are made to Load While Active parameters in the
PBHCHANNEL. The Load While Active parameters of the PBHCHANNEL are,
• HART variable-related parameters
• HART notification-related parameters
If you are not reloading the PBHIOMB block using the Load While Active option, then you must load the
individual PBHCHANNEL for which the changes are made.
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