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The DPM200 is a high-performance communication gateway for the Bachmann M1 automation system, providing seamless integration with PROFIBUS DP fieldbus networks. Configurable as a Class 1 / Class 2 Master or as a Slave, it enables the...
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The DPM200 is a high-performance communication gateway for the Bachmann M1 automation system, providing seamless integration with PROFIBUS DP fieldbus networks. Configurable as a Class 1 / Class 2 Master or as a Slave, it enables the M1 controller to manage a wide range of distributed peripherals in multi-vendor environments.
With 500 V galvanic isolation and a high-speed process data image, the DPM200 ensures reliable, noise-immune communication in electrically harsh industrial applications.
| Specification | Details |
|---|---|
| Model Designation | DPM200 |
| Manufacturer | Bachmann Electronic GmbH |
| Fieldbus Protocol | PROFIBUS DP (Decentralized Peripherals) |
| Operational Modes | Master (Class 1 / Class 2) or Slave |
| Baud Rate Support | 9.6 kbit/s to 12 Mbit/s (automatic detection) |
| Network Capacity | 32 nodes (without repeaters), up to 125 slaves with repeaters |
| Process Data Image | 8 kB total I/O data |
| Physical Interface | 2× 9-pin D-Sub female (RS485) |
| Pin Assignment | EN 50170 compliant |
| Galvanic Isolation | 500 V between fieldbus and controller logic |
| Power Requirements | 400 mA @ 5 VDC (via M1 backplane) |
Legacy System Integration: Connects the M1 system to existing PROFIBUS-based devices.
Supported Devices: Frequency converters, motor starters, valve terminals, and third-party remote I/O.
Dual D-Sub Ports: Simplifies daisy-chaining and allows diagnostic tool connection without bus interruption.
Electrical Protection: Galvanic isolation shields the CPU from common-mode voltages and transient spikes.
DPM200 vs Ethernet-Based Fieldbuses:
While PROFINET offers higher bandwidth, PROFIBUS DP remains the benchmark for deterministic and proven communication in harsh environments.
DPM200 vs Serial Modules:
Features a dedicated onboard PROFIBUS controller, offloading protocol handling from the main CPU and preserving application performance.
Q: Does the DPM200 support PROFIBUS repeaters?
A: Yes. The DPM200 is fully compatible with standard PROFIBUS repeaters, allowing network expansion up to 125 slave devices.
Q: Can both D-Sub connectors be used for separate networks?
A: No. The two connectors are internally linked to the same PROFIBUS interface, intended for wiring convenience and diagnostics—not for independent networks.
