917MB/918MB, Modbus RTU DC Akım/Voltaj Output (4 Kanal Analog) Modül

DC Current or Voltage Output Modules
with Discrete Outputs

• 4 analog output channels

• 0 to 20mA or 0 to 10V DC output range

• 4 discrete output channels,
open drain MOSFETS (1A DC loads, 0 to 35V DC)

• 10 to 36V DC, 24V AC power

• Modbus RTU high-speed RS-485

These modules drive four analog output channels and also feature four discrete outputs for on/off control. Isolation separates the output, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. AC and DC power sources are supported with nonpolarized, diode-coupled terminals.

The analog outputs generate a signal based on communication from the host. They accommodate wide DC voltage or current ranges.

Discrete outputs provide simple on/off switching capability for external devices.


• Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps)

• 12-bit D/A yields 0.1% of span resolution and accuracy

• Four outputs in a single inch-wide module reduces system costs and saves panel space

• Four discrete outputs enable host-controlled on/off switching

• Heavy-duty 1A solid-state relays provide dependable on/off control of industrial devices

• Self-calibration lowers maintenance costs by reducing periodic manual calibration checks

• Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost

• Three-way isolation eliminates potential ground loops between power, output and network circuitry

• Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication

• Operating temperature: -25°C to +60°C (-13°F to +140°F), limit 917MB ambient to 50°C maximum for supply voltages less than 15V

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