Result codes for SCMD instructions

When a tag is assigned to store the result of an
Equipment Sequence
 command (SCMD) instruction, the instruction returns one of these codes when it runs.
Code (Dec)
Description
0
The command was successful.
48
The command was not executed because it was not possible at the time to generate an event to record the command.
  • If the command was an ABORT command, the ABORT command is still executed even if the event could not be generated.
  • This code only occurs if event generation has been enabled in the
    Equipment Sequence Properties - Configuration
     tab.
24577
The command is not valid.
24578
The command is not valid for the current state of the
Equipment Sequence
. For example, if the
Equipment Sequence
 is in the running state, then a start command is not valid.
24579
  • The
    Equipment Sequence
     cannot be commanded for these reason:
    • The program successfully attached to the
      Equipment Sequence
      , but it cannot command the sequence because
      Logix Designer
      , a higher priority application, has overridden ownership.
24582
  • Attachment to the
    Equipment Sequence
     failed because the sequence was previously attached to one of these users:
    • An external sequencer, such as FactoryTalk Batch software, has ownership.
    • Another program in the controller (an internal sequencer) has ownership.
    • An operator using the Sequence Manager ActiveX Controls has ownership.
24580
The caller of the instruction is attached, but is not the current owner of the
Equipment Sequence
. A higher priority owner, such as
Logix Designer
, is commanding the
Equipment Sequence
.
24594
The
Equipment Sequence
 is unscheduled, inhibited, or in a task that is inhibited.
24604
An equal or higher priority command is being processed.
24631
Too many sequence parameter or step tags are defined per step, so events cannot be handled and the START command failed.
Use the
Result
 operand to get a code that shows the success or failure of the SCMD instruction. The
Result
 operand should contain either
0
 or a DINT tag, depending on whether ownership conflicts or other errors are likely to occur.
  • If ownership conflicts or other errors are not likely, enter
    0
     in the
    Result
     operand.
  • If ownership conflicts or other errors are likely, enter a DINT tag in the
    Result
     operand. The DINT tag stores a code for the result of the execution of the instruction.
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