Frequency Measurement-Counting Acquisition Module is suitable for various industrial sites. It can input 10 channels of discrete signals for detection and output 4 channels of relay signals, and realize real-time communication with the host computer via the RS485 interface.
Frequency Measurement-Counting Acquisition Module with a RISC instruction set. It can input 4 channels of pulse signals with voltages of 5V, 12V, and 24V, and a frequency range of 1～50KHZ. The pulse counting function has a storage feature, and communication with the host computer can be achieved through RS485. Meanwhile, it adopts photoelectric isolation technology to separate the power supply, communication, and pulse input from each other, further enhancing the module's anti-interference capability.
Features
Equipped with an RS485 interface for real-time communication with the host computer.
Adopts a microcontroller with a RISC instruction set.
Supports input of 4-channel pulse signals with voltages of 5V, 12V, 24V and a frequency range of 1～50KHz.
Utilizes photoelectric isolation technology for strong anti-interference capability.
Input
10-channel discrete input (4 channels support pulse counting with storage function)
Input signal range: 5V; 12V; 24V (5V as factory default)
Output
4-channel relay output
Communication
Photoelectrically isolated RS-485 communication interface
Alarm
4-channel relay output, configurable via communication control.
Other Detailed Parameters
| Parameter Category | Specification Details |
| Number of Input Channels | 10 single-ended channels (4 high-speed channels and 6 standard DI channels) |
| Input Signal Range | - 4 pulse counting channels |
| - 6 standard DI channels | selectable active or passive input |
| Pulse Input Current | >5mA |
| Input Count Value | 16-bit (32-bit internal counting reserved, selectable as needed) |
| Maximum Pulse Frequency | 50KHz |
| Data Storage | Power-off data retention, supporting approximately 10 years of data storage |
| Number of Output Channels | 4 relay channels |
| Output Contact Rating | 2A/250VAC |
| Communication Method | RS485 interface |
| Driving Distance | 1200 meters |
| Communication Format | Modbus RTU protocol, 8 data bits, no parity/odd parity/even parity, 1 stop bit |
| Communication Protocol | Passive query |
| Isolation Voltage | 1500V |
| Standard Power Supply Voltage | DC24V |
| Power Supply Voltage Range | DC20V~32V |
| Power Consumption | 0.7W (2.88W when all relays are closed) |
| Mounting Method | DIN rail |
| Operating Temperature | -20℃～+60℃ |
| Relative Humidity | 40%～80% RH (Note Converted from 0.4-0.8RH for compliance with international humidity expression standards) |
| Storage Temperature | -55℃～+85℃ |
| Model Selection Dimensions | 88×72×59mm (suitable for standard 35mm DIN rail mounting) |
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