PL8DIO - 8 Digital Input/Output Module

The PL8DIO module is an 8 channel digital input and 8 channel digital output module.

The inputs are isolated from the logic by bi-directional opto-couplers. The common is connected internally to either the -volts or +volts field power supply terminals using a jumper link which is situated inside the housing.

The inputs have internal counters associated with them. These counters are 32 bit counters allowing a count value from 0 to 4294967295.

PL8DIO - 8 Digital Input/Output Module

Digital Inputs


Digital Counters


Counter Resolution

32 Bit

Counter frequency

1 KHz (max)

Pulse width

500usec (min)

Counter Mode


Digital input 0 level

0 to +6.5Vdc

Digital input 1 level

+12Vdc to +24Vdc

Input Impedance

2200 ohms

Input filter

Max 6553 msec.

Status Indication – inputs

LED per channel

Digital Outputs



NPN Open collector

Max Load Current

100mA per channel

Max load Voltage


Vce (on) Voltage

1.1V (max)

Isolation (Field & Logic)


Watch dog output timer

Disable or 1-255 sec adjustable

Isolation (Field & Logic)

1500 V RMS

Status Indication – outputs

LED per channel

Power supply (Field)

+12Vdc to +24Vdc

Order Codes

  • PL8DIO - 8 Digital Input/Output Module

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