[Analog input voltage drop.]

You're adding a resistor in parallel to R1 when you connect the analog input; the spec lists 20K ohms as the input impedance.  The effective resistance (Re) below the sensor will be 6.67K.  

 

Applying the voltage divider formula Vr = Vs*Re/ (Re + Rs) = 10 * (6.67) / (6.67 + 10) = 4.00 

 

 

You're going to have to re-size R1 to compensate for the input impedance of the module.  I'll leave that as an exercise for you.  Or you could just adjust your scaling logic.

 

Joe T.

Thanks , i have made an adjust of scalling logic already.

Thanks for the fast response.

Cheers 

Aleksei Bagel 

[Analog input voltage drop.]

Hello , 

Need some help.

I have NTC sensor 10k Ohm at 25 C , connected through the voltage divider to Jazz 10-11-ua24 analog 0-10V input.  When divider is not connected to plc , and i measure voltage between R1 and ground it shows 5 V , and then i connect it to the plc , voltage drops to 4V. 

What is the reason ?

i have made a drawing of connection diagram

Thanks in advance 

 

Bagel NTC calibration.spl7.pdfAleksei 

[Communication problem Jazz and Gsm modem]

Hello .

i have a problem.

In my project I I have Jazz T10 and GSM modemEnfora1308 connected to it.

So, sms function works beautifully , Plc receiveand send sms.

But now , I want to debug program online, so I connect another Enfora1308 modem to the pc , andit initialized.

Then I’m trying to connect to the PLC side modem, but message occur that connection timeexpired or time out.

As I understand , to receive and send sms , SB181 must be on , and what about online debug through modem.

SB 73 must be active ? or I;m doing somethingwrong ?

Hope you understand my problem

Thx

Aleksei

[Analog outputs]

Thanks, alot. I have solved my problem. Thanks to all for replies.

Aleksei

[Analog outputs]

Hi

I’m trying to programJazz JZ-11-UA24 , and want to activate an analogoutput +10v from controller keypad.

I have tried to store a value #8192 into the MI100 which is connected toanalog output, but it doesn’t take any effect.

Can anyone show a programexample, for me ?

Thanks

Aleksei