Generic Device Support Blocks (Genpadsb And Genpagwdsb) For Pa Devices; Functions Of Genpadsb And Genpagwdsb - Honeywell Experion PKS User Manual

7 DEVICE SUPPORT BLOCK (DSB)
7.5 Generic Device Support Blocks (GENPADSB and GENPAGWDSB) for
PA devices
Starting from R430, the GENPADSB and GENPAGWDSB can be configured for PROFIBUS PA devices.
If the PROFIBUS PA devices are connected to a transparent PROFIBUS PA Coupler, you must use the
GENPADSB. If the PROFIBUS PA devices are connected to a Siemens DP/PA link IM-157, you must use the
GENPAGWDSB.
A single GENPADSB can support up to 8 PDCs and each PDC can support up to 16 channels. In addition,
GENPADSB supports 16 user-defined alarms.
A single GENPAGWDSB can support up to 64 PDCs and each PDC can support up to 16 channels. In addition,
GENPAGWDSB supports 132 user-defined alarms.
Related topics
"Device Support Block (DSB) overview" on page 112
"CEAG Device Support Block (CEAGDSB)" on page 129
"Generic Drive Device Support Block (DRIVEDSB)" on page 124
"Siemens AS-i Link Device Support Block (Siemens DP/AS-i-Link DSB)" on page 134
"Siemens ET200M Device Support Block (Siemens ET200M DSB)" on page 138
"Turck Excom Device Support Block (Turck Excom DSB)" on page 142
"Generic Device Support Blocks (GENDSB and GENIODSB)" on page 120

7.5.1 Functions of GENPADSB and GENPAGWDSB

GENPADSB
• Integrates PROFIBUS PA slave devices to Experion through transparent PA segment couplers.
GENPADSB reserves individual address for every individual slave.
• Reads data from field devices and writes output into field devices.
• For input devices, updates channel status and sends notification based on the PA status byte received from
the slave device. Note that some of the slave devices do not provide the status information. You must refer to
the device specification provided by the vendor.
• For output devices, provides data status to the slave device. Note that some of the slave devices do not
accept the PA status provided by the master. You must refer to the device specification provided by the
vendor.
• Processes extended diagnostic data from PA device and allows access of diagnostic data to controller.
• Allows enabling/disabling of alarms per channel based on PA data status.
• Receives data from PIOMB and sends it to the device, if the PDC is connected to a PIOMB.
GENPAGWDSB
• Integrates PROFIBUS PA slave devices to Experion through non-transparent Profibus DP/PA link, Siemens
DP/PA link IM-157.
The Siemens DP/PA link IM-157, is a DP slave that acts as a proxy for the PA field devices. The Siemens
DP/PA link IM-157 reserves one PROFIBUS DP slave address.
• For input devices, updates channel status and sends notification based on the PA status byte received from
the slave device. Note that some of the slave devices do not provide the status information. You must refer to
the device specification provided by the vendor.
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