Yaskawa VS-616G5 Modbus Plus Communication Card - Manual (Page 6)

1-2 Introducing the Modbus Plus Network
Overview
This manual describes the installation of a Yaskawa Modbus Plus Communication Kit,
configuration of the MB+ board and programming of the master (MSTR) function blocks,
necessary for network nodes (VS-616G5 drives) to process message transactions.
This manual should be used for personnel involved in developing, installing, or troubleshooting
Yaskawa drives communicating via the Modbus Plus network (also referred to in this manual as
the MB+ network).
Modbus Plus Network Introduction
Modbus Plus is a communications system designed for industrial control applications. Modbus
Plus is a LAN (Local Area Network) communication scheme which allows a host PLC to
communicate with slave devices (nodes) on a network. Each network supports up to 64
addressable node devices, at a data transfer rate of 1 MegaBaud.
With a MB+ board installed, a VS-616G5 can be configured as one of the 64 nodes. The
connection between nodes on the LAN is achieved using a shielded, twisted-pair cable between
each node.
Example MB+ Network
MODICON
PLC
Node=1
MB+ Network
VS-616G5
Node=2
VS-616G5
Node=3
VS-616G5
Node=4