Rockwell-automation 1769-OF4VI Compact I/O Isolated Analog Modules User Manual download pdf (Page 66)

Publication 1769-UM014B-EN-P - May 2010

4-14 Module Data, Status, and Channel Configuration for the Output Modules

1769-OF4CI and -OF4VI Program/Idle Mode (PM)

This configuration selection provides individual program/idle mode selection

for the analog channels. When this selection is disabled [the bit is reset (0)], the

module holds the last state, meaning that the analog output remains at the

last converted value prior to the condition that caused the control system to

enter the Program mode.

If this selection is enabled [the bit is set (1)] and the system enters the program

mode, it commands the module to convert the user-specified value from the

channel’s Program/Idle mode word to the appropriate analog output for the

range selected.

1769-OF4CI and -OF4VI Program/Idle to Fault Enable (PFE)

If a system currently in program/idle mode faults, this setting determines

whether the program/idle or fault value is applied to the output. If the

selection is enabled [the bit is set (1)], the module applies the fault value. If the

selection is disabled [the bit is reset (0)], the module applies the program/idle

mode data value. The default setting is disabled.

IMPORTANT

Hold last state is the default condition for the 1769-OF4CI

and -OF4VI during a control system run-to-program mode

change.

TIP

The MicroLogix 1500 and CompactLogix controllers do

not support Hold Last State. This functionality is only

supported when the analog module is used on the

DeviceNet network via the 1769-ADN adapter.

TIP

Not all controllers support this function. Refer to your

controller’s user manual for details.

TIP

Not all controllers support this function. Refer to your

controller’s user manual for details.

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Rockwell-automation 1769-OF4VI Compact I/O Isolated Analog Modules User Manual Page 66