Honeywell Experion PKS, Руководство пользователя

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7.6 Generic Drive Device Support Block (DRIVEDSB)
The DRIVEDSB runs on the PGM and represents one PROFIdrive application in the PROFIBUS network. The
DRIVEDSB processes the raw data from the PROFIdrive applications and converts it to the PDC format
supported by the Experion.
Unlike other DSBs, the DRIVEDSB does not have slots for the I/O modules. The DRIVEDSB has a port that
can be used to access all the parameters.
The DRIVEDSB supports the following two PROFIdrive applications.
• Standard drive (For example, speed control).
• Single axis positioning drive with local motion control.
Both drives can be implemented only using the DP-V0 communication. These drives support only a single
Parameter-process data object (PPO) module per device. The DRIVEDSB does not support modules that require
multiple PPO types. Also, only the big-endian devices are supported by the DRIVEDSB.
Parameter - process data object (PPO)
The PPOs are defined for cyclic data transfer and can be divided into the following two parts.
• PZD (Process data area) - These parameters represent the monitoring parameters such as the control words,
status information, set point, and actual values.
• PKW (Parameter area) - These parameters enable you to read/write values to the parameters in the drive. For
example, reading parameter information such as maximum value, minimum value, and so on.
Through the PPO, the PZD parameters and the PKW parameters can be transferred from the master to the slave
device and vice versa.
The following 5 PPOs are defined in the PROFIdrive technology.
• PPO1 input channel - Support up to 17 channels (16 DI channels, 1 AI channel)
• PPO1 output channel - Supports up to 17 channels (16 DO channels, 1 AO channel)
• PPO2 input channel - Supports up to 32 channels (16 DI channels, 1 AI channel and 15 user configurable
channels)
• PPO2 output channel - Supports up to 32 channels (16 DO channels, 1 AO channel and 15 user configurable
channels)
• PPO3 input channel - Supports 17 channels (16 DI channels, 1 AI channel)
• PPO3 output channel - Supports 17 channels (16 DO channels, 1 AO channel)
• PPO4 input channel - Supports 32 channels (16 DI channels, 1 AI channel and 15 user configurable
channels)
• PPO4 output channel - Supports 32 channels (16 DO channels, 1 AO channel and 15 user configurable
channels)
• PPO5 input channel - Supports 32 channels (16 DI channels, 1 AI channel and 15 user configurable
channels)
• PPO5 output channel - Supports 32 channels (16 DO channels, 1 AO channel and 15 user configurable
channels)
In the PPO input types, the 16 DI channels map to the individual bits of the status word of the PPO. The
standard AI channel maps to the real time actual value of the drive (speed or torque).
In the PPO output types, the 16 DO channels map to the individual bits of the control word of the PPO. The
standard AO channel maps to the set point of the drive (speed or torque).
Refer to the
PROFIBUS Gateway Module Parameter Reference guide for more information on the Status Word
and the Control Word descriptions.
7 DEVICE SUPPORT BLOCK (DSB)
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