FORM 50.40-OM2

DIGITAL INPUTS / OUTPUTS TESTS

FIG. 53

This diagnostic is used to analyze the digital inputs and outputs of the Microboard.

The state of each Microboard Program Jumper and Program DIP Switch, as interpreted by the Microboard, is depicted by an LED. If the Microboard interprets its input as being at a Logic Low (<1.0VDC) level, the LED is illuminated. If interpreted as being at a Logic High (>4.0VDC) level, the LED is extinguished.

PROCEDURE

Digital Inputs:

1.The Digital Inputs are listed on this screen according to Microboard Program Jumpers and Program DIP Switches. Tables 2 and 3 list the functions of the Program Jumpers and Switches.

00531VIPC

2.If a Program Jumper is present, the applicable LED should be extinguished. If the LED is not extinguished, the Microboard is defective.

3.If a Program Jumper is not present, the appli- cable LED should be illuminated. If the LED is not illuminated, the Microboard is defective.

4.If a Program Switch (DIP) is in the ON position, the applicable LED should be illuminated. If the LED is not illuminated, the Microboard is defective.

5.If the Program Switch (DIP) is in the OFF posi-

tion, the applicable LED should be extinguished.

 

If the LED is not extinguished, the Microboard

 

is defective.

5

6. When all desired tests have been performed,

 

press DIAGNOSTICS key to return to MAIN

 

DIAGNOSTICS Screen.

 

YORK INTERNATIONAL

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York 00497VIP manual Digital Inputs / Outputs Tests

00497VIP specifications

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