ProSoft Technology MVI56E-MNET/MNETXT - Manual (Page 131)

MVI56E-MNET / MNETXT ♦ ControlLogix Platform Reference
Modbus TCP/IP Interface Module User Manual
ProSoft Technology, Inc. Page 131 of 181
April 23, 2014
5.3 Data Flow between the MVI56E-MNET Module and ControlLogix
Processor
The following topics describe the flow of data between the two pieces of
hardware (ControlLogix processor and MVI56E-MNET module) and other nodes
on the Modbus TCP/IP network under the module’s different operating modes.
The module contains a server and a Client. The server accepts TCP/IP
connections on service ports 502 (MBAP) (10 server connections) and 2000
(MNET) (10 server connections). The Client can generate either MBAP or MNET
requests dependent on the service port selected in the command.