MULTIrep X2 PROFIBUS Repeater with Integrated Diagnostics
Networking
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Seamlessly replace Siemens PROFIBUS repeaters — faster diagnostics, better isolation, & free support. The MULTIrep X2 is your future-ready solution — a diagnostic PROFIBUS repeater designed for stable, scalable, and serviceable networks. Improve long-distance communication, isolate problematic segments, and diagnose issues instantly with built-in LED indicators. Perfect for star topologies or high-performance PROFIBUS builds.
Overview
The MULTIrep X2 (Article No. 110030010) allows you to extend your PROFIBUS DP network to support up to 126 devices with increased cable lengths, depending on transmission speed. Each segment supports 32 devices (31 + repeater), and the X2 version regenerates PROFIBUS signals in two directions with isolation between channels.
This repeater enhances network reliability by isolating sensitive segments and regenerating weak signals to meet PROFIBUS standards. It also supports expansions or maintenance without shutting down the entire network.
Key Features
- Replaces Siemens diagnostic repeater (same form factor)
- Basis for a stable PROFIBUS star or stub structure
- Enables expansions during running operation
- Built-in diagnostics via segment LED display
- Errors are isolated to affected segments only
- Up to 7 galvanically isolated segments (X2 supports 2)
- In stock – ships same-day from Alpharetta, GA
- Free U.S.-based engineering support
Diagnostics and LED Indicators
Each channel includes built-in LED diagnostics for fast fault identification:
- Bus LED: Green = OK, Red = Error, diagnostic message, or telegram repetition
- Data LED: Green = Fieldbus activity, Red = PROFIBUS issue, Off = no activity
Installation Guidelines
The repeater connects via 9-pin Sub-D connectors in accordance with PROFIBUS guidelines. If a segment begins or ends directly at the repeater, activate bus termination at the connector level.
For diagnostic measurements, use the PG interfaces at the 9-pin plugs on each segment. This allows you to identify issues before they affect other areas of the network.
Technical Specifications
- Voltage Supply: 24 VDC ±20%
- Power Draw: 0.3 A
- Baud Rate: 9.6 kbps to 12 Mbps
- Connection: 2 x 9-pin Sub-D (X2 version)
General Specifications
- Installation: 35 mm DIN rail
- Dimensions (H x W x D): 105 x 75 x 40 mm
- Protection Class: IP20
- Operating Temp: +5°C to +55°C
- Storage Temp: -20°C to +70°C
- Supported Protocols: PROFIBUS DP, DP-V1, FMS, MPI
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.
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.
Classic line structure example
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.
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.
