Honeywell Experion PKS User Manual page 68

6 PROTOCOL BLOCK
For gateway redundancy
• For configuring the Tuck Excom DSB for gateway redundancy, you must select the gateway module with
suffix "C" (Cyclic Data). For example, GDP1,5Ex C should be selected if "Trckff9f" GSD file is used for
configuration. The gateway module contains an input status word and an output command word. You must
configure the net tag names for both words.
• While configuring the module-specific parameters in the Parameters page, you must configure the
following parameters for gateway redundancy.
– Redundancy mode - Redundancy mode is "off" by default. When the redundancy mode is "off,"
communication capability of the redundant gateway is not verified on switchover and diagnostic data for
gateway is not generated. Therefore, you cannot view the status of the redundant gateway in the
Redundant Gateway tab from the Monitoring view.
When the redundancy mode is set to "mode 1," the communication capability of the redundant gateway
is verified on switchover and diagnostic data for gateway is generated. In addition, you can view the
status of the redundant gateway in the Redundant Gateway tab from the Monitoring view.
– address offset - You must select the value "enable."
– address offset value - An address offset value for the secondary gateway.
The following figure illustrates a sample Parameters page of the GDP1, 5Ex C module.
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Attention
Mode 3 is not supported.