MULTIrep PROFIBUS Repeater Series

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MULTIrep PROFIBUS Repeaters / Hubs

Better Structure. More stable operation. Integrated error suppression.

The PROFIBUS Repeaters MULTIrep X2, X5, and X7 not only meet all requirements for modern, flexible PROFIBUS cabling. Due to the integrated interference suppression function, they also ensure the greatest possible stability of data communication.

Thanks to the integrated diagnostics, clearly visible status LED, and automatic interference suppression, MULTIrep PROFIBUS repeaters allow easy and targeted troubleshooting.

The use of these repeaters enables the extension of a PROFIBUS network to a maximum of 126 stations as well as the extension of the speed-dependent cable length. A maximum of 32 stations (31 + repeater) is permitted per segment. The MULTIrep regenerates the voltage signal in two, five, or seven directions and raises it to the PROFIBUS standard level. Physically, this results in up to seven segments that are galvanically isolated from each other.

Top Features of the MULTIrep series

> Extension of your PROFIBUS project, up to 126 stations (star structure possible)

> Signal stabilization / regeneration for trouble-free data communication

> Reporting of logical and physical anomalies in PROFIBUS data traffic

> Error isolation on individual segments through automatic filtering

> Simplified diagnosis and accelerated troubleshooting through segment delimitation with error status

The MULTIrep product range

2 port PROFIBUS Repeater Multirep X2 110030010



Compact PROFIBUS repeater for 2 segments



PROFIBUS-Repeater/-Hub for up to 5 segments



PROFIBUS-Repeater/-Hub for up to 7 segments

The MULTIrep series, with the compact basic repeater X2 and the multiple repeaters X5 and X7, forms the ideal basis for a robust star-shaped PROFIBUS topology. In addition to the compact design, the MULTIrep repeaters impress with their easy handling. The PROFIBUS cabling is implemented using the proven and robust D-SUB connector. There are no error-prone DIP switches or terminal points. A unique feature of the MULTIrep series is the integrated diagnostic function that permanently monitors the data traffic and indicates the health status of each segment via LEDs.

Expert advice: Use the D-Sub connectors of your MULTIrep repeater as plug & play access for PROFIBUS measuring points without additional installation effort. When using a 9-pin D-Sub connector with a PG interface, you create the necessary measurement access directly at the repeater.

Please note: For a precise diagnostic measurement or troubleshooting, you need a non-reactive measuring point at the beginning and end of each segment.

MULTIrep: Features and benefits in detail

Signal regeneration for trouble-free data communication

With the MULTIrep repeaters, the voltage signal required for data communication is regenerated in both line directions and raised to standard PROFIBUS level. However, the signal content remains unchanged, ensuring smooth data communication in large segments and/or long cable runs.

PROFIBUS signal refreshing by MULTIrep repeater

Stable star structure possible

With the MULTIrep PROFIBUS repeater series, it is possible to divide your network into two, five, or seven galvanically isolated segments, depending on the expansion stage. As a result, local, functional, or technological groups can be formed depending on the purpose. The classic line structure is dissolved. The star-shaped arrangement of many small segments with signal refreshment brings numerous advantages for stable operation and troubleshooting. These are known, among other things, from Ethernet-based networks.

Expert advice: We recommend the use of repeaters to separate conspicuous or interference-prone participants. The galvanic separation of the segments prevents effects on the complete PROFIBUS system.

Example of a classic line structure

Classic line structure example

An example of a star structure in a PROFIBUS network with the Multirep X5

Star structure example with the MULTIrep X5

Integrated quick diagnosis and error filtering

All repeaters of the MULTIrep series permanently monitor the PROFIBUS telegram traffic. The status LED on the device signals any occurring logical or physical anomalies. Error telegrams and telegram repetitions are also signaled by the bus LED. The data LED generally indicates whether the slaves on the channel are communicating and if there are any configuration errors. Therefore, the health status of the respective PROFIBUS segment can be permanently monitored and checked quickly.

The integrated diagnosis enables the maintenance technician to narrow down the error to the affected segment. The status LED makes this segment easily identifiable.

MULTIrep PROFIBUS repeater with error diagnostics

If error telegrams or signal interference occur in a segment with repeaters, errors are automatically filtered and not transferred to other segments, preventing interactions outside the affected segment.