Benefit from freedom: with Modbus messages are exchanged independently of the lower layers of the ISO/OSI reference model. Exchange is based on a master/slave or client/server architecture.

Numerous variants

• Modbus ASCII (American Standard Code for Information Interchange) for transmitting ASCII characters
• Modbus RTU (Remote Terminal Unit) as bit-oriented programming, e.g., for machine building
• Modbus TCP (Transmission Control Protocol), within the framework of Ethernet, for high-level language applications, also suitable for the laboratory

Modbus TCP is the only industrial communication protocol to have its own dedicated port (port 502): you can link multiple networks easily and have remote access via the Internet.

Assemble I/O stations individually. With the Modbus/TCP-I/O systems from Phoenix Contact, you can integrate an I/O station and/or I/O device to any position on the network. Corresponding to the architecture of modular systems, the bus coupler is the slave in the Modbus network and the master in the local bus.

With a modular design

Especially robust and simple: Axioline F is the  I/O system of the Ethernet generation from Phoenix Contact and is especially immune to interference, as well as EMC safe. In addition, the robust mechanics of the housing enable the device to be operated, thanks to a housing that can be installed without tools and push-in connection technology.

Maximum flexibility: with the Inline Modular automation kit, form follows function. Design each I/O as requested and save space in the switch cabinet, according to the motto, "plugging instead of wiring".

Modular in the field: I/O devices of the Modular Fieldline series give you all the freedom during field installation - functional and adaptable to your application.

Block design

Compact: The Inline Block IO devices offer a large number of channels in an extremely flat block design, as well as a bus connection and pre-set I/Os. This allows communication in a small amount of space.

The Ethernet specialist: with various housing variants and a great degree of functionality, the Axioline E series in block design for Modbus/TCP always provides an individual solution.

For the first time ever, an infrastructure kit in copper and fiber optic technology is available with the PSI-REP and PSI-MOS modular repeater concept.

The network structure is optimized by means of potential segmentation. This offers you virtually unlimited options with regard to the network topology.

At the same time, transmission speed and system availability are maximized – thanks to isolated error limiting or redundant installation concepts.

Convert your Ethernet interface to fiber optics with Factoryline media converters from Phoenix Contact: for maximum immunity to interference and maximum transmission ranges in industrial Ethernet applications.

In addition, the Factoryline isolators are used for electrical isolation (up to 4 kV) in copper-based Ethernet networks. You can therefore protect your Ethernet devices and interfaces and significantly increase immunity to interference under industrial conditions.