7i96s inputs - pull up / pull down / nothing?
08 Jan 2024 17:57 #290231
by Mud
7i96s inputs - pull up / pull down / nothing? was created by Mud
Hopefully easily answered, but the manual only details pull-ups on the expansion port, not TB3 - do the 7i96s inputs have resistors between the single-ended inputs and the input common? If yes, what resistance?
What I would like to do is parallel up my tool length sensor (simple NC switch currently attached to 24V) and my probe (image below). My input common is attached to ground as my other sensors are PNP.
What I would like to do is parallel up my tool length sensor (simple NC switch currently attached to 24V) and my probe (image below). My input common is attached to ground as my other sensors are PNP.
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08 Jan 2024 18:12 - 08 Jan 2024 18:14 #290232
by PCW
Replied by PCW on topic 7i96s inputs - pull up / pull down / nothing?
If the 7I96 input common is grounded, the inputs are pulled down
If the black wire is physically grounded, you should wire as the drawing suggests:
24V to Red
Yellow to 7I96 input
Black to ground
This will give about a 8V input signal into the ~4.7K 7I96 input resistance
which is plenty (min is 4V)
If the black wire is physically grounded, you should wire as the drawing suggests:
24V to Red
Yellow to 7I96 input
Black to ground
This will give about a 8V input signal into the ~4.7K 7I96 input resistance
which is plenty (min is 4V)
Last edit: 08 Jan 2024 18:14 by PCW.
The following user(s) said Thank You: Mud
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