Pulse counter with Modbus RTU output, 4-channel, 1 module MAX-MB-LI-4LO

Pulse counter for precise counting and monitoring

This 4-channel pulse counter with Modbus RTU output is a reliable solution for counting signals generated by various devices. It is suitable for both simple applications counting machine cycles and more complex industrial monitoring systems. The device is mounted on a DIN rail and occupies only 1 module, making it easy to integrate into existing installations.

Versatility and functionality for professionals and users

The counter offers 4 independent counting channels, adapted to work with both AC and DC signals. The adjustable scaling factor allows for rescaling readings, which is useful in applications requiring data presentation in different units. The frequency filter minimizes the impact of interference on measurement accuracy, and the reset function allows you to reset the state of the counter for each channel independently. The memory of the counter state after a power failure ensures continuity of measurement even in the event of short-term power outages.

Modbus RTU communication for system integration

The Modbus RTU output enables easy integration of the counter with SCADA systems, PLCs and other devices supporting this popular communication protocol. Reading the values of counted pulses, scaled values and setting parameters is done via the RS-485 port. Configurable communication parameters (stop bits, parity, baud rate) ensure compatibility with various systems.

Construction and technical parameters

The device is designed to operate in a wide range of supply voltages (9…30 V DC). The counting input accepts voltages from 6 to 30 V AC/DC, and the maximum counting frequency is 100 Hz. The counter has screw terminals with a cross-section of 2.5 mm² and a protection class of IP20. Its compact dimensions (1 module – 18 mm) allow for mounting on a standard 35 mm rail. Additionally, the counting input can be used as a DI digital input with the ability to read its state.