 | Serial I/O FAQs |
Q: Why is my device not responding to the serial commands?
On your PC, make sure that your serial port settings in Measurement & Automation Explorer (MAX) match the serial settings for your device. Follow these instructions to configure your serial port settings:
- Launch MAX.
- Expand Devices and Interfaces.
- Expand Ports (Serial & Parallel).
- Right-click your serial port name in the configuration tree to configure your port.
When using a remote target, you can setup the Serial Port Settings by selecting Target»Target Options, and choosing the Serial Port Tab.
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Note You must have NI-VISA installed to communicate with serial devices. |
Check your device manual for the type of serial cable you need to communicate with the device. Some devices require straight-through cables while others require crossover cables.
Make sure you select the serial port connected to your device when sending and receiving commands.
Q: How can I verify that my serial port is working correctly?
Refer to Serial Communication Starting Point for information and troubleshooting tips.
Q: How do I send a serial command based on the result of an inspection?
At the end of your inspection diagram, add a Logic Calculator step that computes the AND of all the step statuses. Then, add a Serial I/O step after the Logic Calculator step to send a serial command based on the Step Status of the Logic Calculator step.
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Note The AND of all the step statuses equals the Inspection Status. |
Q: How can I set up my remote target serial port configuration?
Navigate to Target»Target Options»Serial Port.
Q: Why are commands not executed when I click the step in the State Configuration window?
In Configuration mode, commands are executed only when you click one of the following buttons:
Run Inspection Once
Run Inspection in Loop
Run Inspection until Failure
Vision Builder AI does not execute the step when you click on the step to avoid potential timeouts associated with the step.