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Ethernet
Ethernet standards support a variety of physical media (coaxial cable, twisted pair, fiber optics) and topologies (bus, ring
and star). The MTQ22-FBP.0 Ethernet communication module supports twisted pair as the physical media in a bus, ring and
star topology.
Possible topologies are shown in Figure 1.
The MTQ22-FBP.0 is compatible with Ethernet standards IEEE 802.3 and IEEE 802.3u.
MTQ22
FBP
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FBP
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Twisted Pair Ethenet
Star
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Ring
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Switch
FBP Interface
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01 Different topologies that can be realized with the MTQ22-FBP.0 Ethernet Adapter. For the ring structure a special switch must be used.
See chapter Communication for more information.
Modbus TCP
Modbus TCP is a variant of the Modbus family of simple, vendor neutral communication protocols intended for supervision
and control of automation equipment. Specifically, it covers the use of Modbus messaging over TCP connection on an IP
network.
The implementation of the Modbus TCP server in the MTQ22-FBP.0 module is done according to:
• Modbus Application Protocol Specification v1.1b
•
Modbus Messaging on TCP/IP Implementation Guide v1.0b
The supported Modbus commands are listed in chapter Communication. Four simultaneous Modbus TCP connections are
supported.
Further information on the Modbus TCP protocol is available from www.modbus.org.
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MTQ2 2- FB P.0 MODBUS TCP M A N UA L