Synapse RTU-DI8, Руководство пользователя

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Features
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8 Channel Opto-Isolated Digital Inputs
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Fast Opto-Coupler design capable of reading high speed pulses

Wide Voltage input range (5-48V)
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Three modes of operation
- High/Low Level Mode
- Pulse Width Measurement Mode
- Pulse Count Mode

Software Modbus registers for
- Channel High/Low Level State Mode
- Channel 32bit Pulse Count totalizer (value also stored in Non-Volatile FRAM) Mode
- Channel 32bit Pulse Count Offset Value
- Current Channel Pulse Width Measurement (PWM) value
- PWM “Olympic Average” channel reading
- *PWM Max channel reading
- *PWM Min channel reading
- Pulse count de-bounce period (default 10ms) configuration setting
- PWM Average short/long configuration setting (selectable as over 6 or 10 readings)
- Channel Mode configuration setting
- Fast Modbus poll rates <100ms
- Baud Rate
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Modbus Address selection via external “Push-On” jumper link setting
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Factory Reset Via “Push-On” link setting
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Integrated Watchdog and Power “Brown-Out” detect and correct
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5V TTL Trigger Output Pin for Ultrasonic Sensors
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Regulated 5V Power supply pins for powering external sensors
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Optional DIN Rail mountable breakout board for Maxbotix ultrasonic sensors routing power
and trigger signals for sequential daisy-chain operation providing maximum reading
reliability.
*These threshold registers are user writeable so a reading can be taken, the registers written back to,
either to zero out or set a new threshold, the system will check new readings against these values
and overwrite if the threshold has been exceeded in the respective direction.
Readings :
Pulse Count Mode keeps a tally of the number of pulses received from a given data source such as
water meter or power meter. These pulses are usually fired by the data source to indicate a number
of litres or kWh has been consumed and are cheaper to implement by the equipment manufacturer
than a full digital interface.
The RTU unit will count pulses up to 100Hz with the default de-bounce setting, a higher frequency
can be achieved if the user is able to supply a solid state input (avoiding relay contact bounce or
other sources of interference).