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2.
Technical Description
The following list highlights the core features and functionalities provided by the MTQ22-FBP
and Modbus TCP protocol.
Highlighted Features
– The MTQ22-FBP Ethernet adapter module provides Ethernet connectivity for the ABB PSE
softstarter Fieldbus plug (FBP) device.
– Up to four FBP devices can be connected to one MTQ22-FBP. This allows a very cost-effi-
cient connection of FBP devices to Ethernet.
– Through the MTQ22-FBP Ethernet Adapter module it is possible to:
•
Give control commands to the device (Start, Stop, Set Auto Mode, etc.)
•
Read status information and actual values from the device
•
Read maintenance counters
•
Reset a trip
– A built in two-port switch allows the flexible usage in bus, star or ring network topologies.
– Up to four masters can concurrently access the connected devices.
– Access via Modbus TCP can be restricted to a limited set of IP addresses.
– The Media Redundancy Protocol (MRP) is implemented (client). MRP is standardized in
IEC/EN 62439-2 and offers cable redundancy in case of a single failure.
2.1.
Modbus TCP
Modbus TCP is a variant of the Modbus family of simple, vendor neutral communication pro-
tocols intended for supervision and control of automation equipment. Specifically, it covers
the use of Modbus messaging over TCP connections on an IP network.
The implementation of the Modbus TCP server in the MTQ22-FBP module is done according
to:
– Modbus Application Protocol Specification v1.1b
– Modbus Messaging on TCP/IP Implementation Guide v1.0b
The supported Modbus commands can be found in chapter 4. Further information on the
Modbus TCP protocol is available at www.modbus.org.
STATUS
Approved
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