Honeywell Experion PKS User Manual page 242

11 LOADING PROFIBUS GATEWAY MODULE (PGM)
Reloading a CM containing PROFIBUS I/O channel blocks
When you reload a CM containing the PROFIBUS I/O channel blocks, the PIOMB holds the last output value
received from the channel block. Also, this value is held by the PROFIBUS slave devices.
Reloading the PROFIBUS HART I/O channel blocks
The PBHCHANNEL can be reloaded whenever there is a configuration change made to the PBHCHANNEL.
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