ProSoft Technology 5204SE-MNET-PDPMV1 - Manual (Page 11)

Functional Overview 5204SE-MNET-PDPMV1 ♦ ProLinx Gateway
User Manual Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master
ProSoft Technology, Inc.
Page 11 of 235
December 22, 2009
The gateway has an RS-232 serial port. ProSoft Configuration Builder can use
this port to view the gateway's diagnostics and troubleshooting menus. You can
also use the serial port to upgrade the gateway's firmware.
2.3 Data Flow through the Gateway
The internal database is central to the functionality of the gateway. This database
is shared between all the ports on the gateway and is used as a conduit to pass
information from one device on one network to one or more devices on either
network supported by the gateway. This permits data from devices on one
communication port or network to be viewed and controlled by devices on
another port or network. In addition to data from the Master port, status and error
information generated by the gateway can also be mapped into the internal
database.
This special SE implementation of the 5204SE-MNET-PDPMV1 gateway uses
the gateway database to store PROFIBUS DP cyclic input and output data. This
means this PROFIBUS cyclic data will be available to the MNET Client (Master)
and Server (Slave) drivers for use on a Modbus TCP/IP network. The SE version
of the MNET Server has also been programmed to "Pass-Through" special
PROFIBUS DP-V1 acyclic mailbox message commands from the Modbus
TCP/IP Server directly to the PDPMV1 PROFIBUS DP-V1 Master driver for
transmission on the PROFIBUS network.