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Posted: 2024-01-04 12:45 AM
M172 retain global variable error
Hello,
I am trying to define a global variable as a Retain-Variable for M172 (TM172PBG42RI) in ESME HVAC by:
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HVAC
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- english
Authentication Failed.
- Authentication Ticket Mismatched, failed authentication.
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Posted: 2024-01-04 09:37 PM
You need to use persistent variables for this.
Follow the link below:
Kind regards
Vaughn Kretzmann
Drives and Controls
South Africa
Landline: +27(87) 759 2221
Mobile & Whatsapp : +27 81 034 6825
Email : vaughn.kretzmann@dnc.za.com
Email : vvk@drivesandcontrols.co.za
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Posted: 2024-01-05 12:02 AM
Thanks for your guess, but in ESME HVAC "Persistent" is not allowed as a keyword.
Kind regards,
jan
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Posted: 2024-01-05 04:25 AM
Hi @jan4 ,
I believe the best for you is to use the EEPROM variables:
EcoStruxure Machine Expert HVAC Training - M3.5 Getting started with EEPROM Variables
The retain / persistent area of variables in the M17x is not like the PLCs M241,M251 or M262 as @VaughnKretzmann mentioned.
Best regards,
LeTomas
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