Ethernet RIOD24

Description:

24-Bit Digital I/O Pod



Main Features:

  • Intelligent Distributed Digital I/O
  • Opto-Isolated RS-485 Serial Interface to Host Computer
  • 24-Bits of Bit, Byte, and 24-bit Word Programmable I/O
  • Open Collector Digital Outputs for Sinking Up To 350mA
  • 50 Volt DC Compatible Digital Inputs and Outputs
  • 16-Bit Digital Input Event Counter on Every Input
  • Digital Outputs May Be Either Level or Pulse
  • Change-of-State Detection for Low-Latency Contact Monitoring
  • All Programming In Software, No Switches or Jumpers to Set
  • NEMA4 Enclosure for Harsh Atmospheric or Marine Environments
  • 8031-Compatible Microcontroller with 8K of EEPROM and SRAM (32K optional)

 

    RIOD24

 

Digital Inputs:

  • Number: Up to 24. Can be programmed, on a bit-by-bit basis, on an 8-bit byte basis, or on a 24-bit word basis. In this latter case, there would be no capability for digital outputs.
  • Sample Rate: Programmable from 14 Hz to 1 KHz.
  • Software Counters: There are 16-bit software counters on all bits programmed to be inputs. These can be programmed to increment on either rising or falling edges.
  • Change of State Detection: Change-of-state flags can be set on any enabled input bits and can be read via the serial port.
  • Logic Input Low: -0.5V to +0.8V.
  • Logic Input High: +2.0V to +50.0V
  • Low-level Input Current: 450 microampere maximum.

 

Digital Outputs:

  • Number: Up to 24. Can be programmed, on a bit-by-bit basis, on an 8-bit byte basis, or on a 24-bit word basis. In this latter case, there would be no capability for digital inputs.
  • Type: Outputs can be latched, pulsed, or set to free-run for a prescribed period of time.
  • Pulsed outputs are square wave and programmable from 7 Hz to 500 Hz.
  • Logic-Low Ouput Current: 350 mA maximum. (See box below.) Inductive suppression diode included in each circuit.
  • Maximum allowable current per output bit is 350 mA but, for each six-bit group there is a cumulative maximum total of 650 mA. Output groups are bits 0-5, 6-11, 12-17, and 18-23 (decimal).
  • High-Level Output Voltage: Open Collector, Up to 50VDC compliance. If no user-supplied voltage, outputs are pulled up to 5 VDC via 10K resistors.

 

Environmental:

  • Operating Temperature Range: 0o to 65oC (Optional -40o to +80oC.). See Temperature De-rating discussion on the REMOTE ACCES Overview page that presents "Specifications Common to all REMOTE ACCES Pods" for temperature de-rating based on power voltage applied.
  • Storage Temperature Range: -50o to +120oC.
  • Humidity: 5% to 95% non-condensing. Enclosure is designed to meet NEMA4 requirements.
  • Size: NEMA4 enclosure 4.53" long by 3.54" wide by 2.17" high.(115mm x 90mm x 55mm)

 

Power Required:

Power for the opto-isolated section can be applied from the computer's +12 VDC power supply via the serial communication cable. Power for the rest of the pod can be supplied by a local power supply.

  • Opto-Isolated Section: 7.5 to 25 VDC @ 40 mA. (Note: Due to the small amount of current required, voltage drop in the communication cable will be inconsequential.)
  • Local Power: 7.5 to 16 VDC @ 150 mA. See box below if local power is greater than 16VOC:

If the local power supply has an output voltage greater than 16VDC, you can install a zener diode in series with the supply voltage. The voltage rating of the zener diode (VZ) should be equal to VI - 16 where VIis the power supply voltage. The voltage rating of the zener diode should be VZ x 0.15 watts. Thus, for example, a 24 VDC power supply would require use of an 8.2V zener diode with a power rating of 8.2 x 0.15 equals approx. 1 watt.

 

pdf-icon

1

 

line

Subscribe and recive our newslatter

line

map

iso

Contact Details

EPS-Tech Ltd.

Industrial park, Tzur-Igal
2 Bazelet St,

Israel, 44862

Tel: +972-9-749-8585
Fax: +972-9-749-8686
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.