Profibus Communication - Siemens SIDOOR ATD4 W Series System Manual

5.5.2.4

PROFIBUS communication

Parameter assignment
The DP master transfers parameters during initialization of the DP slave. This includes the
transfer of standard parameters and specific SIDOOR parameters for the device. The specific
parameters are written in the GSD file. No user data can be exchanged without initialization.
The DP master sends the parameters to the DP slave in a set parameters telegram. The DP slave
answers with a short acknowledgment.
The set parameters telegram consists of user data with 7 to 244 bytes. The first 7 bytes of the
parameters are bindingly specified in the standard. Bytes 8 to 10 are permanently written in DP-
V1, and are not used here. The subsequent bytes are manufacturer-specific. Another 8 bytes are
reserved for this with the PROFIBUS module.
SIDOOR-specific parameters
The SIDOOR internal communication channel (internal bus) can be configured with the
following parameters:
• Data communication
• Baud rate
• Slave address
• Telegram type
• Cycle time
ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA
Controllers
5.5 Relay and fieldbus interfaces
145