Data Echo in ControlLogix Output Modules

Tayyab

Member
Join Date
Mar 2006
Location
Lahore
Posts
2
I want to use the "Output Data Echo" feature in ControlLogix Output Modules (1756-OB32 and 1756-OF8). Their documentation 1756-UM009 says, we csn use the following tag for Channel data echo feature.

"Ch0DataEcho (INT) (valid for all outputs)
The value the channel is currently outputting in counts where -32,768 counts is the minimum producible output signal and 32, 767 counts is the maximum producible." (1756-um009)

The problem is when I define an anaolg output or digital output module in RSLogix5000, I can't see any Ch0DataEcho tag in Controller tag list.

If anyone knows how to use this feature to confirm the output value, please help.
 
1756-UM009 is for Analog Modules, OB32 is a Digital Module.


The "Ch0DataEcho" is probably a fault in the manual, it should be the "Local:x:O.Ch0Data" that represents the value that's working at the moment.
 
I was referring to any of the output modules.

But "Local:x:O.Ch0Data" represents the value that controller is outputting at the moment.
If I am to compare the value that is coming (echoing) back from Output module with this working value at the moment, in this case should I be using "Local:x.I.Ch0Data"?
 

Similar Topics

Hi folks, I'm not as accustom with Siemens & WinCC, however I've been asked to increase the amount of data an existing application is logging...
Replies
2
Views
50
Has anyone migrated Proficy Historian data to a new server? I followed the guide to move all the data over, but when I run the utility, it stops...
Replies
0
Views
42
I cannot add SLC500 analog input tag (I: 8.3) to EZSeries Touch Panel Editor (V 5.3). I used all the listed tag datatype but it all says "Invalid...
Replies
10
Views
244
Hi, Wy we log data in PLC using DLG instruction, when we have option to log data in HMI
Replies
1
Views
75
Hi, I cannot find the DLCA1764.EXE utilty software for data retrieving. Can someone share the link to download this software. Thanks!
Replies
4
Views
112
Back
Top Bottom