Rockwell-automation 1760-xxxx Pico Controller User Manual Manual do Utilizador descarregar pdf (Página 181)

Publication 1760-UM001D-EN-P - September 2005

Use of Expansion Modules 9-3

Monitor Functions of the Expansion Module

Be Sure Power Supply is Present

If the power supply of the expansion module is not present, no

connection can be established between it and the Pico controller.

When no power supply is present, the expansion inputs, R1 to R12

and R15 and R16, are incorrectly processed in the Pico controller and

show status of 0. Also, it cannot be assured that outputs S1 to S8 will

be transferred to the expansion module.

Expansion Module Status

The status of the Pico controller internal input I14 indicates the status

of the expansion module, as follows:

ATTENTION

Always monitor the expansion module to prevent

switching faults in machines or systems.

Expansion Module Status

Pico Controller Input Status

I14 = 0 Expansion module is functional.

I14 = 1 Expansion module is not functional.

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