Rockwell-automation 1771-IGD TTL Input Module Installation Instruction Manual de usuario descargar pdf (Pagina 5)

TTL Input Module 5

Publication 1771ĆIN022B-EN-P - September 2002

Your module is preset to the positive-logic level. Use the following

table to choose between the two logic levels:

If you choose: Then: Jumper Position

HIGH = TRUE logic (positive) 2.0 to 5.25V dc corresponds to logic ``1" (on) Toward rear of module

LOW = TRUE logic (negative) -0.2 to 0.8V dc corresponds to logic ``1" (on) Toward front of module

Note: Selecting positive logic automatically enables the HIGH (positive logic) indicator.

You select high-true or low-true using the jumper accessible through

a slot at the top of the module.

1. Locate the jumper in the slot at the top edge of the module.

2. Use tweezers to position the jumper as required for your

application.

When on front 2 pins, negative logic

selected (low = true).

TTL Input Module

When on rear 2 pins, positive logic

selected (high = true).

104

TTL Logic Level Selection Jumper Assembly

Setting the Logic Level

1 2 3 4 5 6 7 8 9 10 11 12

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Rockwell-automation 1771-IGD TTL Input Module Installation Instruction Manual de usuario Pagina 5