Analog Input Module value Understanding problem

[all4here]

hello.
i am using analog input module....2AI (6ES7 134-4GB52-0AB0)
when i have applied the voltage like 7 or some time 9 volts
then i get the string like that
7F-FF-80-00
7C-F9-80-00
with no voltage then i get the
80-00-80-00

please anyone help me to understand this value..i already read the manual but
no help...



thank you

 

[L D[AR2P#0.0]]

Extract from manual - have you seen this?

 

[JordanCClark]

The part number you provided shows that it is looking for a 4-20mA or 0-20mA. This is a current input module, not a voltage input. You need to correct that first. While it would be best to use a voltage input unit, an interim solution may be to put a 500-ohm resistance in series with the input. This would limit your current flow to 20mA at 10VDC.

I'm going to make the assumption that the card is set for the 4-20mA range.
The values you are getting are hexadecimal values of the two inputs. So, 7F-FF-80-00 becomes 7FFFh and 8000h (the 'h' denotes a hexadecimal value).

Using your data, at 0v, there is no current flow. The hex values for each channel are 8000h and 8000h indicating an Underflow, or way out of range.

The other values (7CF9h and 7FFFh) would indicate an overrange (above 20mA, but still measurable) and Overflow (current too high to measure). Remember that there is nothing to limit the current flow through the input, so the very high values you are getting should make more sense.

 

[all4here]

Extract from manual - have you seen this?

hello,
thankx for your reply...there is nothing like that in the manual that i have.
i will try to understand. can you please send me this manual.

thank you

 

[JordanCClark]

German version

English version

@all4here, did you see what I wrote about the type of unit you are using?

 

[L D[AR2P#0.0]]

Open h/w config, right click on module to find manual:

 

[all4here]

German version

English version

@all4here, did you see what I wrote about the type of unit you are using?

thank you...yes i have check and notice that i am using current measuring module and now i am using resistor to produce the current betwwen 4 to 20mA...

thankx to all of you...