gbradley
Lifetime Supporting Member
I have an analog input card F4-08AD.
It's on a D4-430 CPU.
What I was noticing is that the voltage between CH 2COM and CH2 IN creeps up slowly .
When I go online I can see the creep.
The thing is I notice that all of the Inputs do this when they are not connected to a load.
When I put a tester accross to check the voltage, I can see the voltage at up to 16V, but it starts dropping immediately once I begin measuring.
The V3002 value drops from 4095 down until I remove the leads.
When I look at the V3002 value it begins to creep up again.
Is this normal?
Thanks for any comments.
It's on a D4-430 CPU.
What I was noticing is that the voltage between CH 2COM and CH2 IN creeps up slowly .
When I go online I can see the creep.
The thing is I notice that all of the Inputs do this when they are not connected to a load.
When I put a tester accross to check the voltage, I can see the voltage at up to 16V, but it starts dropping immediately once I begin measuring.
The V3002 value drops from 4095 down until I remove the leads.
When I look at the V3002 value it begins to creep up again.
Is this normal?
Thanks for any comments.