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The CNT204 is a specialized high-speed counting and frequency measurement module for the Bachmann M1 automation system. It provides four independent hardware-based counter channels, capable of processing rapid pulse signals from incremental encoders, proximity...
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The CNT204 is a specialized high-speed counting and frequency measurement module for the Bachmann M1 automation system. It provides four independent hardware-based counter channels, capable of processing rapid pulse signals from incremental encoders, proximity sensors, and flow meters.
Designed for deterministic, real-time signal acquisition, the CNT204 ensures precise position, speed, and frequency measurement even in high-vibration and electrically noisy industrial environments. Each channel supports counting inputs and reference (zero) signals, making the module ideal for motion feedback, speed control, and high-resolution process metering.
| Specification | Details |
|---|---|
| Model Identification | CNT204 |
| Manufacturer | Bachmann Electronic GmbH |
| Counter Channels | 4 independent channels |
| Maximum Counting Frequency | Up to 1 MHz (signal and configuration dependent) |
| Signal Levels | 24 VDC or RS422 / TTL (configuration specific) |
| Counter Resolution | 32-bit internal counters |
| Measurement Modes | Event counting, frequency, period, positioning |
| Encoder Support | Incremental encoders (A, B, Zero/Reference) |
| Direction Detection | Via phase-shifted A/B signals |
| Galvanic Isolation | Process signals isolated from internal M1 system bus |
| Diagnostics | Per-channel status LEDs |
| Operating Temperature | –30 °C to +60 °C |
Wind Power: Rotor speed monitoring and blade pitch position feedback
Packaging & Conveying: High-speed conveyor synchronization and length measurement
Textile Machinery: Yarn length tracking and spindle speed monitoring
Process Industries: Flow metering and pulse-based process measurement
By handling time-critical pulse processing at the hardware level, the CNT204 offloads the main CPU, allowing the controller to focus on higher-level control logic.
Q: Can the CNT204 detect direction of rotation from an encoder?
A: Yes. The CNT204 supports 1×, 2×, and 4× evaluation of A/B phase-shifted encoder signals, enabling automatic direction detection and bidirectional counting.
Q: Can the counter be reset using an external signal?
A: Yes. Each channel includes a dedicated reference (zero) input, which can be configured to reset the 32-bit counter or trigger a position capture.
