Rockwell-automation 1771-OFE Analog Output Module Installation Instruc Manual de usuario descargar pdf (Pagina 6)

Analog Output Module6

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If you are using the voltage output version (1771-OFE1), you must

set several configuration jumpers on the module’s circuit board. You

must set these jumpers before you can proceed with configuring the

module. When you set these jumpers, you configure each channel for

one of the three voltage ranges listed above. The module is shipped

with the jumpers in the +

10V position.

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The LAST STATE configuration jumpers determine the value of all

the module’s outputs whenever communication between the module

and the processor is lost. This condition occurs when a processor or

adapter faults, or the processor is placed in the PROG or TEST

mode, or if the remote I/O cable breaks.

This is a significant safety feature. You can choose to have the

module’s outputs go to the minimum, middle or maximum of their

respective ranges or hold their last state if a module or system fault

occurs or if the system processor changes from RUN to PROG

mode.

You do this by placing the LAST STATE configuration jumpers on

eight (four jumpers on sets of pins) of the stake pins corresponding

to MIN, MID or MAX. If you do not place configuration jumpers in

one of these positions, the module defaults to the HOLD LAST

VALUE setting.

IMPORTAN

• On power-up, the module’s output is

disabled until the module receives the first

block transfer write. The output then enables

with the value that you send it in the block

transfer write block.

• We ship 1771-OFE modules with the LAST

STATE configuration jumpers in the MID

position.

ATTENTION

Switch 1 of the I/O rack affects the function of the

configuration settings as indicated in the table below.

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Rack switch 1 determines what output conditions occur during a rack

fault.

1 2 3 4 5 6 7 8 9 10 11 ... 19 20

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Rockwell-automation 1771-OFE Analog Output Module Installation Instruc Manual de usuario Pagina 6

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