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.
