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36 Specifications

5.8 – Digital I/O Board

The Digital I/O-BCD board has been designed to inter-

face to switches and/or relays. There are 24 optically

isolated inputs and 16 optically isolated outputs per

board.

If the MX2000 controller is an MX2A or MX6A the first

digital I/O board is the Power supply board and there are

16 inputs and 8 outputs available (101-116). Up to 4

boards can be interfaced to an MX2000-8 controller. The

ID for each board is selected via 2 dip switches located

on the board.

5.8.1 – Input Connector

This connector has 24 optically isolated inputs that can be

configured for current sinking or sourcing. The sink-

ing/sourcing selection is done on the digital I/O card us-

ing jumpers. The factory setting is sinking.

Note: The movement of both jumpers is required for

proper operation. If only one jumper is moved the

digital inputs and outputs modes will be different.

Inputs

Signal Name Description Electrical Specification

B01 to B24 IN (B01-B24)

Sink Mode: On state 0 to +12 volts, On state current 2.3 ma @ +12v, 6.5 ma @ 0v.

Source Mode: On state +10 to +24 volts, On state current 2.3 ma @ +10 volts, 6.5 ma

@ +24 volts.

Where: B is the board number, 1 through 4.

Header

Pins

Jumpers

J7 J7

Jumper Positions

for

Sourcing I/O

Jumper Positions

for

Sinking I/O

INPUTS

1,2,13,14

3,4,15,16

5,6,17,18

7,8,19,20

9,10,21,22

11,12,23,24

24V

COM