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User manual
Serial > Digital I/O & Counter/Timer

Serial 72 Line Digital I/O Unit

  • Connects via RS232 or RS485
  • 72 DIO lines
  • TTL level I/O
  • I/O Connector: 3x DB25 Male
  • LED indication of power connection
  • Ideal for portable/laptop applications
  • Housing: Plastic ABS with rubber feet
  • Power: 260mA max
  • O/S Support for Windows 98/ME/XP/2000
  • Includes EDRE SDK and WaveView for Windows
  • Dimensions: 45(H) x 80(W) x 148(L) mm
  • Supplied with EDR Enhanced Software & Universal Switch Mode 9V PSU

The MicroDAQ SRL-72A is a general purpose digital I/O product which communicates to the host PC via an RS-232 or RS-485 (dependent on model) serial connection. Based on the industry standard 82C55 PPI device. They Feature 72 TTL level digital I/O lines. The I/O can be programmed in banks of 8 as inputs or outputs.

Two interface versions are available for the serial MicroDAQ range, these include RS-232 models and RS-485 models. The RS-232 models are best suited for short distances (up to 30 meters).

The RS-485 models allow for long distance data transmission (up to 1200 meters). These RS-485 models are ideally suited for process control applications in a plant or industrial environment, which require long cable runs.

This digital I/O product is ideal for use in the connection between a computer and the outside world. Allowing computer programs not only to sense real world events, but control them as well. Applications include man-machine interfacing, driving high power loads, sensing switch contact closures and much more.

Ordering Information

Item    Description    Price    Qty
SRL-72A-RS232    RS232 72 Channel DIO Unit - incl 2Mtr RS232 Cable & 9VDC Power Supply    £ 364.00
€ 469.92
$ 528.00
SRL-72A-RS485    Serial 72 Line Digital I/O Unit (RS485 Interface)    £ 366.00
€ 472.59
$ 531.00
Optional Accessories

Item    Description    Price    Qty
ADPT-25-L    Long MicroDAQ mini Screw Terminal Adapter    £ 40.00
€ 51.62
$ 58.00
ADPT-25-M    Medium MicroDAQ mini Screw Terminal Adapter    £ 40.00
€ 51.62
$ 58.00
ADPT-25-S    Short MicroDAQ mini Screw Terminal Adaptor    £ 40.00
€ 51.62
$ 58.00
ADPT-2526    DB25 (F) & IDC26 (M) to 27way Screw Terminal    £ 64.00
€ 82.77
$ 93.00
DB25M/F    DB25(M) to DB25(F) Multi-core Screened Cable    £ 15.00
€ 19.58
$ 22.00
PC-37F    24 Channel Opto-22 Solid State Relay Module    £ 447.00
€ 576.72
$ 648.00
PC-38X    24 Channel I/O DRIVER MODULE    £ 55.00
€ 70.31
$ 79.00
PC-43C    24 Channel Digital Opto-Isolator I/P Module    £ 150.00
€ 193.13
$ 217.00

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