DGH Corporation, D4171, D4100 Voltage Output Module, 0-5V/RS-232
Features:
- Readback of Analog Output Signal
- Communications Watchdog Timer
- User-programmable Starting Value
- User-scalable input data values
- Readback of Analog Output Signal
- Three digital inputs
- 1000 conversions per second
- Programmable high/low output limits
- 500Vrms output isolation
- 12-bit output resolution
- Scaling in engineering units
- Baud rates 300 to 38,400
- Nonvolatile digital calibration
- Direct connection to "dumb" terminals or modems
- Requires +10 to +30Vdc unregulated supply
- Addressable: up to 124 units per serial port
- Bumpless manual control inputs
The D4100 series analog output modules contain an isolated 12-bit digital to analog converter that is scaled to generate DC voltage signals commonly used in the process control, production test and motion control industries. The D4100 series modules include advanced features for improved system safety, including user-scalable input data values, a communications watchdog timer, user-programmable starting value, analog output slew-rate control and true analog output readback.
The communications watchdog timer, together with the user-programmable starting value, can be programmed to force the voltage output signal to a known "safe" condition in the event of a communications failure. Ensuring that control devices like valves will not remain open if a communications cable is severed.
The D4100 contains an 8-bit analog to digital converter for true readback of the voltage output signal. While not a highly accurate measurement, the readback will provide assurance that the voltage output is working correctly. Use the readback to detect fault conditions, excessive load conditions, and wiring errors.
Three onboard digital inputs accept direct contact closures from switches or relays. Making them ideal for monitoring on/off signals like cabinet door status or manually controlling the analog output at a remote module location. The D4100 series modules can also be mounted on a DIN-Rail using the MK-1 mounting kit.
For more information, please see 
Data Sheet
