The MVI46 Modbus Master/Slave Network Interface Module allows Rockwell Automation SLC processors to interface with Modbus-compatible devices. Compatible devices include not only Modicon PLCs but also a wide assortment of third-party devices found in nearly every industry.
Many host SCADA packages support the Modbus protocol, while devices commonly supporting the protocol include several PLCs, as well as many other third party devices in the marketplace. (For a partial list of devices that speak Modbus, please visit the ProSoft Tested section of the ProSoft Technology web site).
The MVI46-MCM module acts as an input/output module between the Modbus network and the Rockwell Automation backplane. The data transfer from the SLC processor is asynchronous from the actions on the Modbus network. A 5000-word register space in the module exchanges data between the processor and the Modbus network.
The inRAx Modbus Master/Slave Communications module is designed to allow SLC processors to interface easily with Modbus protocol-compatible devices and hosts.
Pipelines and offshore platforms
Applications using the Modbus Communication Module can be found in many industrial sectors and in the following applications:
Pulp and paper
Foreign device data concentrator
The module is recognized as an Input/Output module and has access to processor memory for data transfer between processor and module using M0/M1 files
Single Slot - 1746 backplane compatible (Local or extended I/O rack only. Remote rack not supported)
Ladder Logic is used for data transfer between module and processor. Sample ladder file included
Configuration data obtained from configuration text file downloaded to module. Sample configuration file included