When should I use an SOVR instruction instead of an SCMD instruction?

Under most circumstances, use the SCMD instruction to programmatically command an

Equipment Sequence

. However, use the SOVR instruction to command an

Equipment Sequence

under these conditions:

When you are giving the HOLD, STOP, or ABORT command, and the command must always execute under all ownership circumstances.

If the HOLD, STOP, or ABORT command must execute even when you have manual control of the

Equipment Sequence

through the

Logix Designer

application or when another program, such as the

FactoryTalk Batch

software, owns the

Equipment Sequence

For example, suppose your equipment checks for jammed material. If there is a jam, you always want the equipment to abort. In that case, use the SOVR instruction. This way, the equipment aborts even if you have manual control through the

Logix Designer

application.

Equipment Sequence instructions

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