7i77 is not changing state on inputs
29 Jan 2020 16:36 #156095
by COlger81
7i77 is not changing state on inputs was created by COlger81
This is a new build, my 2nd 7i77 build. I am feeding VIN and FIELD with 24v. I measure 24v and Ov respectively on INPUT 16 of 7i77 as switch is actuated. When monitoring inside linuxcnc, HAL is showing that the input is not changing state. Any assistance is appreciated.
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30 Jan 2020 11:44 #156165
by bbsr_5a
Replied by bbsr_5a on topic 7i77 is not changing state on inputs
i woudt sugest to put a Resitor on it 100K and try a difffernt input to see if it workes there
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10 Feb 2020 00:17 #156921
by andypugh
Is hm2_5i25.0.read attached to the servo thread?
Replied by andypugh on topic 7i77 is not changing state on inputs
This is a new build, my 2nd 7i77 build. I am feeding VIN and FIELD with 24v. I measure 24v and Ov respectively on INPUT 16 of 7i77 as switch is actuated. When monitoring inside linuxcnc, HAL is showing that the input is not changing state. Any assistance is appreciated.
Is hm2_5i25.0.read attached to the servo thread?
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10 Feb 2020 10:15 #156940
by tommylight
Replied by tommylight on topic 7i77 is not changing state on inputs
The inputs on the 7i77 are sinking type so you have to provide voltage to them to change state, in your case you have to wire the input to +24V for it to work, not to GND.
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10 Feb 2020 14:16 #156958
by bevins
Replied by bevins on topic 7i77 is not changing state on inputs
Take a wire connect it to vfield and touch an input while checking hal configuration.
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27 Feb 2020 01:05 #158591
by COlger81
Replied by COlger81 on topic 7i77 is not changing state on inputs
Sorry for the delay. It was a bad power supply. Resolved
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