ProSoft Technology MVI46-MBP - Manual (Page 37)

Reference MVI46-MBP ♦ SLC Platform
Modbus Plus Communication Module
ProSoft Technology, Inc. Page 37 of 101
February 19, 2008
5 Reference
In This Chapter
™ Product Specifications ........................................................................... 37
™ Functional Overview.............................................................................. 39
™ RS-232 Configuration/Debug Port......................................................... 57
™ Modbus Plus Connections..................................................................... 59
™ DB9 to RJ45 Adaptor (Cable 14)........................................................... 59
™ Modbus Plus Communication Port ........................................................ 60
™ Database Definition ............................................................................... 60
™ Configuration Forms.............................................................................. 77
™ Frequently Asked Questions ................................................................. 87
5.1 Product Specifications
The MVI46 Modbus Plus Communication Module allows Rockwell Automation
SLC I/O compatible processors to interface easily with other Modbus Plus
protocol compatible devices.
The Modbus Plus module is a powerful module designed with both Master and
Slave support, enabling easy connection to other Modbus devices (Modicon
processors and many others).
5.1.1 Features and Benefits
Compatible devices include not only Modicon PLCs (which all support the
Modbus Plus protocol) but also a wide assortment of end devices licensed
through the ModConnect Program. The MVI46-MBP module acts as an
input/output module between the Modbus Plus network and the SLC backplane.
The data transfer from the SLC processor is asynchronous from the actions on
the Modbus Plus network. A 4000-word register space in the module exchanges
data between the processor and the Modbus Plus network.
These modules allow Rockwell Automation platforms to connect directly on
Modbus Plus networks as a peer. In addition, the modules act as slaves to
processors that must read/write data from the module's memory.
Crossing all industrial boundaries, potential applications include the connection of
Rockwell Automation processors to Modicon processors, and the connection of
Modbus Plus speaking devices such as drives, relays, and power monitor
hardware to the SLC backplanes.