Testing of drive IO pins

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Jumper wires that are useful in this testing method
In cases a signal is not correctly getting through to drive (such as direction signal in step/dir mode), there is a way to test if the problem lies within the drive or exernal circuity. This page describes by example how to test Direction input of drive.

Procedure for differential inputs

Step 1. Disconnect any cable from I/O connector and use jumper wires to connect the GND and 5V to pins under test. In this case we test HSIN2 by following wiring:

TestingHSIN2.png

Step 2. Connect to drive with Granity software and inspect status of the HSIN2 from Testing page status information.

If all worked correctly, pin state should have changed in Granity. If pin state is stuck, check connections. If still no luck, it is possible that input pin of device has been damaged.

This method works also for analog inputs. Instead, just check analog readings of inputs from Granity. You should see +5V or -5V in this test.
For single ended input (ones found in IONI for example), just connect the input with single wire to either 5V or GND.

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