Functions Of Siemens Et200M Dsb - Honeywell Experion PKS User Manual

7 DEVICE SUPPORT BLOCK (DSB)
Analog Module
Analog Input/Output Module SM334;AI 4/AO 2_12 bits

7.9.2 Functions of Siemens ET200M DSB

Function
• Integrates the PROFIBUS DP slave devices to Experion.
• Reads data from the field devices and writes output into the field devices depending on whether the I/O
module is an input module or an output module.
• Processes extended diagnostic data and updates channel status and sends notification based on the channel
status.
• Receives data from PIOMB and sends it to the device, if the PDC is connected to a PIOMB.
• Updates the PDC states.
Data Processing
See "Data processing" on page 118.
Channel Status Processing
The Siemens ET200M DSB supports the following channel states.
• Bad_NonSpecific
• Bad_ConfigError
• Bad_ConnError
• Bad_DevError
• GoodCasc_NonSpecific
• Good_NonCascade
• GoodCasc_InitReq
Tip
Refer to the PROFIBUS Gateway Module Parameter Reference guide for more information on channel status.
Diagnostics
The ET200M I/O rack provides slave diagnostics for troubleshooting and checking the health of the rack. These
diagnostics are also used for reporting the ET200M DSB alarms. The maximum size of the slave diagnostics of
an IM 153-1 is 64 bytes and IM 153-2 is 96 bytes.
The slave diagnostics can be classified into the following categories.
• Standard diagnostics - Byte 0 through byte 5 represent the standard diagnostics related to the PROFIBUS
slave device. These diagnostics can be viewed from the Slave Status tab of the DSB configuration form.
• Module diagnostics - Byte 6 through byte 8 represent the module-related diagnostics. These diagnostics
represents the I/O modules of the DSB that are faulty.
• Module status - Byte 9 through byte 15 represent the module status. Module status reflects the status of the
configured module. Note that you can receive the module status only if the extended diagnostics is enabled
during configuration.
• Channel-specific diagnostics - The channel-specific diagnostics provide information about the channel
errors in the module. However, the channel-specific diagnostics do not impact the module status. Note that
you can receive the channel-specific diagnostics only if you have enabled the extended diagnostics during
the configuration.
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