How To 7-11
7.4 Program Linking
The test requirements for many components require more than one test to be
performed at different test conditions e.g. test pressure, port selection, etc which
can be automated using Program Linking.
Program Linking allows individual programs to be uniquely configured to perform
a predetermined sequence of tests instead of manually selecting the individual
programs required.
The Linking criteria below specifies the type of jump to be performed dependent
upon the test result:
• Disabled, no jump is performed.
• Immediately, jumps to the next selected program.
• Wait for signal, waits for a start input before jumping to the next selected
program.
• Pause Delay, jumps to the next selected program after the set period.
7.4.1 Program Linking Features
• A test sequence will continue on a "Pass" result by default but can be modified
by setting the "Link Jump On" parameter to continue on a "Reject" or "Pass or
Reject" result.
• A test sequence may require a manual operation to be performed before
continuing the sequence. This can be configured by setting the “Linking Jump
On” parameter to “Wait for Signal” to pause until a start input is received.
• The result outputs are cleared on starting the next program in a sequence and a
short delay can be set using the “Linking Pause Time parameter to allow the
result to be observed by the user or by an external PLC control system.
• A test sequence will vent between programs by default but can be disabled by
setting the "Link Vent" parameter to "Off" to reduce test cycle time.
• The couple output, is controlled by the first program in the linked sequence
when enabled and remains on for the duration of the sequence. The couple
output settings on the following linked programs are ignored.
• The Auto zero step is only performed by the first program in the Linked series
when enabled.
• The statistics for each program in the sequence are updated independently.
• The Ready output remains off for the duration of the sequence.
• The "End of Cycle" output only occurs at the end of the sequence.
• A sequence will be terminated on an Abort input or when an error or fault
condition is reported.
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