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The implementation makes use of the following instructions:

• JS7 - Retry Instruction 
• JS7 - Try / Catch Instruction
• JS7 - If Instruction

Workflow

ddThe below workflow implements the use case.

Download: retry-on-return-code.workflow.json

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Explanation:

• This workflow implements
  • an outer Retry Block to repeat execution.
  • an inner Try / Catch Block to handle specific exit codes of the job.

Try Block

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Explanation:

• After a first job job1 the job2 should be restarted for a number of times if it fails with return code 1.
• The JS7 - Retry Instruction manages the retry capability and the intervals.
• JS7 - Try / Catch Instruction 
  • executes the job within the Try Block.
    • Should the job complete successfully then processing will continue after the Catch Block.
    • Should the job fail then it will enter the Catch Block.

Catch Block

If Instruction

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Explanation:

• Within the Catch Block the JS7 - If Instruction is used to check the return code value which gives two options:
• If the return code is 1 then left branch of the If Instructions used for any other return code values the right branch is used.
• Subsequently we find two occurrences of a JS7 - Fail Instruction.

Fail Instruction

Left Fail

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Explanation:

• The left Fail Instruction fails the order with a return code 1.
• In addition, a message can be added that becomes visible with the JOC Cockpit GUI for the failed order.
• As a consequence the failed order is picked up by the outer Retry Instruction that will repeat execution of job1.

Right Fail

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Explanation:

• The right Fail Instruction fails the order with a return code 2.
• In addition, a message can be added that becomes visible with the JOC Cockpit GUI for the failed order.
• The checkbox uncatchable is used to indicate that the failed order cannot be picked by the outer Retry Instruction and therefore will remain with the current position in a failed state.