Using the CONFDATA feature on SD Cards
We have a PM564 with AO561 analogue output card attached.
We use a standard programme for all our machines but they have two different device options, one is 0-10v and the other 4-20mA
Is it possible to keep our CoDeSys programme standard but change the configuration of the AO561 channel using an SD card and the CONFDATA feature?
Thank you.
We use a standard programme for all our machines but they have two different device options, one is 0-10v and the other 4-20mA
Is it possible to keep our CoDeSys programme standard but change the configuration of the AO561 channel using an SD card and the CONFDATA feature?
Thank you.
Asked 3 months ago
Answers
0
I found the answer to this question hidden away in the Automation Builder Help files.
Search for "Flexible Configuration".
They list a couple of ways to achieve this, I did the following:
Create .ccf files containing alternate hardware configurations and load them into the program under 'Manage Additional Files', 'Hardware Configuration' tab.
Load library Flexible Configuration Library (and include PLC_REBOOT in project).
Create button on HMI screen with time delay to enable FLEXCONF_ID_WRITE function
Use FLEXCONF_ID_READ to detect active configuration
A SEL instruction compares the current active configuration to determine which file to write to the PLC.
Excuse the capitalised tags
Search for "Flexible Configuration".
They list a couple of ways to achieve this, I did the following:
Create .ccf files containing alternate hardware configurations and load them into the program under 'Manage Additional Files', 'Hardware Configuration' tab.
Load library Flexible Configuration Library (and include PLC_REBOOT in project).
Create button on HMI screen with time delay to enable FLEXCONF_ID_WRITE function
Use FLEXCONF_ID_READ to detect active configuration
A SEL instruction compares the current active configuration to determine which file to write to the PLC.
Excuse the capitalised tags
Answered 1 month ago
by kstoilov
Hi,
It is interesting question, I have never used CONFDATA so can't give you advise on that. Looking in SD card functional specification, most probably not. Let's see the other comments.
But how many AO do you need from AO561? In case it is only one, you can configure AO0 for voltage and AO1 for current.
by richard.baty Rank: 2251 on 12/23/2020 5:58:36 AM | Like (0) | Report
Thank you for the reply. Unfortunately both channels are used so we don't have this option.
I will try some testing and post here if I can get it to work.
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