ProSoft Technology 5104-DNPS-PDPM - Manual (Page 10)

Functional Overview PDPM ♦ ProLinx Gateway
Protocol Manual PROFIBUS DP Master
Page 10 of 70 ProSoft Technology, Inc.
June 24, 2013
2.5.1 PROFIBUS Master Port Specifications
Type Specifications
General Parameters
Internal Database Up to 4000 registers (words) available.
Communication parameters Baud Rate: 9.6 kbps to 12 Mbps
PROFIBUS Master
Command List Read Diag
Global Cmd
Read Cntrs
Reset Cntrs
Status Data Error codes available on an individual command
basis. In addition, a slave status list is maintained
per active PROFIBUS Master port.
PROFIBUS Master
Node address 0 to 125 (software selectable)
Status Data Error codes, counters and port status available per
configured slave on the network.
2.5.2 PROFIBUS Master Port Access to Database
Virtual
Database
Command
List
Other
Driver
PROFIBUS
Driver
Slave
Device
Databases Other
Protocol
PROFIBUS
Master
PROFIBUS
Slaves
Request
Response
Read
Read for
Write Command
Write for Read
Command
Write
Read
The Master driver uses the database in two ways:
1 A read command issued to a slave device by the master driver will return the
slave data into the internal database.
2 A write command issued to a slave device by the master driver uses the data
in the internal database to write to the slave device.