Rockwell-automation 1769-IF4FXOF2F Compact Combination Fast Analog I/O Manual de usuario descargar pdf (Pagina 50)

50 Publication 1769-UM019A-EN-P - October 2008

Chapter 3 Module Data, Status, and Channel Configuration

Enable/Disable Channel (EC)

This configuration lets each channel be enabled individually. When a

channel is not enabled (EC = 0), the output channel is set to 0V or

0mA.

Program Mode (PM)

This configuration selection provides individual Program mode

selection for the output channels. When this selection is disabled

(PM = 0), the module holds the last state. This means that the output

remains at the last converted value prior to the condition that caused

the control system to enter Program mode.

If this selection is enabled (PM = 1), and the system enters the

Program mode, the module converts the user-specified value from the

channel’s Program Mode word to the appropriate analog output for

the range selected.

Bit Definitions for Output Range and Output Data Configuration Words

Define To choose Make these bit settings

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Output

Type/Range

Select

-10…10V DC

0000

0…5V DC

0001

0…10V DC

0010

4…20 mA

0011

1…5V DC

0100

0…20 mA

0101

Output Data

Format Select

Raw/Proportional

Counts

000

Engineering Units 001

Scaled for PID 010

Percent Range 011

IMPORTANT

Hold last state is the default condition for the module during a

control system Run-to-Program mode change.

TIP

Not all controllers support alternate output states and this

function. Refer to your controller’s user manual for details.

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