Two dry/wet contact inputs for status monitoring and pulse counting
Y301-200 2-Channel RS485 Modbus Pulse Counter Module
2DI I/O Module
Y301-200 reads two opto-isolated digital inputs over RS485 Modbus RTU, with 32-bit pulse counting, configurable debounce, and count retention after power loss.
Key Features
32-bit accumulated counts are retained after power loss
Selectable rising or falling counting edge with 5-255 ms debounce
RS485 Modbus RTU, optional RS232 or TTL, and software-configurable address 1-255
Input-only design with a 5-36 VDC supply and 80 mA typical current at 12 V
Specifications
Power Supply
- Voltage
- DC 5~36V
- Typical Current
- 80 mA @ 12 V
- Operating Temperature
- -40°C ~ +85°C
- Humidity
- 5% ~ 95% RH, non-condensing
Digital Inputs
- Channels
- 2
- Type
- Dry/wet contact, opto-isolated
- Voltage Range
- 5-36 VDC (wet contact; confirm permitted voltage for supplied hardware before connection)
- Sampling Rate
- 100 Hz
- Pulse Counter
- 32-bit, selectable rising/falling edge
- Debounce
- 5~255 ms (default 50 ms)
- Counter Retention
- Accumulated counts are retained after power loss
Communication
- Interfaces
- RS485 (2-wire), optional RS232 or TTL
- Protocol
- Modbus RTU slave
- Baud Rate
- 600~230400 bps (default 9600)
- Slave Address
- 1-255 (software configurable; default 1)
Mechanical
- Dimensions
- 77.4 x 22.5 x 16.2 mm
- Mounting
- DIN rail or screw mounting
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