Should I be able use the AT keyword in TIA Portal - PLCS.net

drbitboy · January 16th, 2022, 02:00 AM

This is what I have:

xxx.png

However, I cannot add an overlay i.e. an AT ... in the data type. There is a description of how to use the AT keyword in the help that comes with my TIA portal.

What am I missing?

TIA

Brian Carcich

L D[AR2,P#0.0] · January 16th, 2022, 04:44 AM

Block must be set for non-optimised access.

drbitboy · January 16th, 2022, 04:40 PM

Quote:

Originally Posted by L D[AR2,P#0.0]

Block must be set for non-optimised access.

Thanks for the reply.

Yah, I am sure it is something silly* I overlooked, but it's not that (I am pretty sure I unchecked that box before the OP).

* It is Siemens after all, and they want to be as silly as A-B, only they add unneeded complexity to try to hide it.

yyy.png

drbitboy · January 16th, 2022, 04:42 PM

P.S. there are only two auto-complete results when I type "A" in [Data Type] cell, and neither is "AT" as predicted by the help file.

yyy.png

RVaughan · January 16th, 2022, 10:22 PM

1. Have you compiled the block since de-optimizing? Try that.
2. Try collapsing The_reals before adding the AT
3. Delete the row, add a new one in its place, and try selecting the data type before entering the tag name.

drbitboy · January 16th, 2022, 11:28 PM

Quote:

Originally Posted by RVaughan

1. Have you compiled the block since de-optimizing? Try that.
2. Try collapsing The_reals before adding the AT
3. Delete the row, add a new one in its place, and try selecting the data type before entering the tag name.

Thanks for the ideas ...

1. Yes, no change
2. Done, no change
3. Done, no change

Perhaps my TIA Portal (V14) predates AT functionality?

I started a project from scratch, created the DB, made it standard (not optimized) access, compiled both [Software (Rebuild all)] and [Software (Rebuild all blocks)], added the Real Array and collapsed its row, deleted the (empty) row, and this was the result:

zzz.png

L D[AR2,P#0.0] · January 17th, 2022, 02:15 AM

You cannot use AT in a DB, it can only exist in the interface of an FB/FC/OB

chud · January 17th, 2022, 02:27 AM

As L_D mentioned you can do it inside a fb/fc/ob

Below i found a video showing this

https://www.youtube.com/watch?v=qHL1H0qsObk

drbitboy · January 17th, 2022, 07:17 AM

Ah, thank you, the help said "code blocks" but I missed it. d'Oh!

That does make it less useful.

Lare · January 17th, 2022, 11:44 AM

Also on some TIA version before (14, 15?) AT command needed to be on next line from data type.

mk42 · January 17th, 2022, 02:01 PM

See support site FAQ:
https://support.industry.siemens.com.../view/57132240

It doesn't NEED to be a non-optimized FB/FC, but if it is optimized the retentivity needs to be "Set in IDB" for some reason.

I don't make the rules, I just try to bend them to my will.

January 16th, 2022, 02:00 AM	#1
drbitboy Lifetime Supporting Member Join Date: Dec 2019 Location: Rochester, NY Posts: 5,150	Should I be able use the AT keyword in TIA Portal This is what I have: xxx.png However, I cannot add an overlay i.e. an AT ... in the data type. There is a description of how to use the AT keyword in the help that comes with my TIA portal. What am I missing? TIA Brian Carcich __________________ _ Brian T. Carcich i) Take care of the bits, and the bytes will take care of themselves. ii) There is no software problem that cannot be solved with another layer of indirection. iii) Measurement is hard. iv) I solemnly swear that I am up to no good

January 16th, 2022, 04:44 AM	#2
L D[AR2,P#0.0] Lifetime Supporting Member Join Date: Nov 2006 Location: UK Posts: 6,391	Block must be set for non-optimised access. __________________ S7-300 to 1500 conversions done - email to s7conversions@hotmail.com

January 16th, 2022, 04:42 PM	#4
drbitboy Lifetime Supporting Member Join Date: Dec 2019 Location: Rochester, NY Posts: 5,150	P.S. there are only two auto-complete results when I type "A" in [Data Type] cell, and neither is "AT" as predicted by the help file. yyy.png __________________ _ Brian T. Carcich i) Take care of the bits, and the bytes will take care of themselves. ii) There is no software problem that cannot be solved with another layer of indirection. iii) Measurement is hard. iv) I solemnly swear that I am up to no good

January 16th, 2022, 10:22 PM	#5
RVaughan Member Join Date: Mar 2012 Location: Michigan Posts: 95	1. Have you compiled the block since de-optimizing? Try that. 2. Try collapsing The_reals before adding the AT 3. Delete the row, add a new one in its place, and try selecting the data type before entering the tag name. __________________ A few minutes with someone who loves you

January 17th, 2022, 02:15 AM	#7
L D[AR2,P#0.0] Lifetime Supporting Member Join Date: Nov 2006 Location: UK Posts: 6,391	You cannot use AT in a DB, it can only exist in the interface of an FB/FC/OB __________________ S7-300 to 1500 conversions done - email to s7conversions@hotmail.com



This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
*Try our online PLC Simulator- FREE. Click here now to try it.*

January 17th, 2022, 02:27 AM	#8
chud Member Join Date: Oct 2007 Location: KALAHARI Posts: 1,051	As L_D mentioned you can do it inside a fb/fc/ob Below i found a video showing this https://www.youtube.com/watch?v=qHL1H0qsObk

January 17th, 2022, 07:17 AM	#9
drbitboy Lifetime Supporting Member Join Date: Dec 2019 Location: Rochester, NY Posts: 5,150	Ah, thank you, the help said "code blocks" but I missed it. d'Oh! That does make it less useful. __________________ _ Brian T. Carcich i) Take care of the bits, and the bytes will take care of themselves. ii) There is no software problem that cannot be solved with another layer of indirection. iii) Measurement is hard. iv) I solemnly swear that I am up to no good

January 17th, 2022, 11:44 AM	#10
Lare Member Join Date: Jan 2006 Location: Finland Posts: 1,789	Also on some TIA version before (14, 15?) AT command needed to be on next line from data type.

January 17th, 2022, 02:01 PM	#11
mk42 Lifetime Supporting Member Join Date: Jun 2013 Location: MI Posts: 2,841	See support site FAQ: https://support.industry.siemens.com.../view/57132240 It doesn't NEED to be a non-optimized FB/FC, but if it is optimized the retentivity needs to be "Set in IDB" for some reason. I don't make the rules, I just try to bend them to my will.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Topics
Thread	Thread Starter	Forum	Replies	Last Post
Modifying Identification and Maintenance info with TIA portal	AlfredoQuintero	LIVE PLC Questions And Answers	9	April 3rd, 2021 03:44 AM
TIA Portal v15 - does it overwrite v14 / v13?	uptown47	LIVE PLC Questions And Answers	20	March 8th, 2019 03:59 AM
run Step 7 without TIA Portal	dmned64	LIVE PLC Questions And Answers	4	June 7th, 2017 06:39 AM
License for TIA Portal ( from S7 to TIA )	Oliver Micka	LIVE PLC Questions And Answers	2	November 29th, 2016 07:40 AM
Siemens OP77B Trouble in TIA Portal	Tim James	LIVE PLC Questions And Answers	4	December 24th, 2012 03:27 PM