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DesigoCC, values after PLC restart

Created by: Argalis24 at: 4/6/2021 2:09 PM (8 Replies)

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4/6/2021 2:09 PM	Rate (0)
Argalis24 Posts: 7 Rating: (0)	Hello, I have such a question. How can I make it so that after the PLC restarts(power off/on), the analog values that I recorded from DesigoCC with manual priority are repeatedly recorded from DesigoCC to the PLC. Currently, after the restart, the priority that was given from Desigo disappears.
Argalis24 Posts: 7 Rating: (0)
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4/6/2021 2:15 PM	Rate (0)
Khazzir Posts: 23 Rating: (5)	Hello, What kind of PLC are you integrating? According to my knowledge, for example in room outomation (DXR2/PXC3 controllers) commands made with PRIO8 are recommanded by controller after restart. Best Regards
Khazzir Posts: 23 Rating: (5)
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4/6/2021 2:36 PM	Rate (0)
Argalis24 Posts: 7 Rating: (0)	Hello, I have PXC36.1-E.D, PXC100-E.D, PXC3.E75A-1
Argalis24 Posts: 7 Rating: (0)
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4/6/2021 6:24 PM	Rate (0)
CJ. Gold Expert Joined: 11/8/2017 Last visit: 12/16/2025 Posts: 360 Rating: (201)	Hi, Can you please provide some more info on the types of points (analog values) that are you referring to? i.e. AVAL, AVAL_OP? Same for the points within your PXC3. For Desigo CC, when you initiate a point change / override, the command is only sent once, i.e. when you press the Change / Command button in the CC UI - this is when the command is sent to the PX controller. As far as I'm aware, there is no automatic 'repetition' of this action by Desigo CC - which is why you are seeing the values revert to a lower priority command, or maybe even their default values depending on how you have configured the points. Regards,

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4/7/2021 11:17 AM	Rate (0)
Argalis24 Posts: 7 Rating: (0)	Hello, I have both AVAL and AVAL_OP points. And it seems that only AVAL does not keep its last values, priorities. After a restart, the AVAL priorities are: 00-None for PX and 17-Default for PXC, like they are in program. And the manual priorities that were set from Desigo are not saved. I can set the values with Relinquish Default. And after the restart will take the value from there. I have to try to set YES on Operator Enable (priority 8) in the program, then this priority will be active after restart and possibly the value from Desigo will remain. Regards,
Argalis24 Posts: 7 Rating: (0)	Last edited by: Argalis24 at: 04/07/2021 11:17:49
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4/7/2021 6:08 PM	Rate (1)
CJ. Gold Expert Joined: 11/8/2017 Last visit: 12/16/2025 Posts: 360 Rating: (201)	Hi, For your AVAL, the behaviour you are seeing is correct. If you do not have any software within the controller that writes to the AVAL, then it will revert to it's default value after a power cycle. The AVAL is more suited to applications where you are commanding the point at different priority levels from within the controller software, i.e. for the PXC36 / PXC100, you would use the Program/Switch/Critical/Safety priorities; and for the PXC3 you would use priorities 16 through to and including 1. You then of course have the option to Override the AVAL from Desigo CC (Pri08), should you need this function. Can you provide a brief description please on your application and what you are trying to achieve with the AVAL? For AVAL_OP blocks, changes made to these blocks are stored within the controller. The method used in the background for commanding these points is different, and there is no priority array to worry about. Regards,

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This contribution was helpful to 2 thankful Users Albis Argalis24

4/8/2021 9:50 AM	Rate (0)
Argalis24 Posts: 7 Rating: (0)	Hello, Thanks for the reply. It is now clear that AVAL does not write values to the controller. I wanted to use it as a setpoint and for example use manual priority as manual control, and for example 14-priority from time schedule as auto control. But now it is clear that this is not the case, because after restarting the priority of the manual will not remain. Regards,
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4/8/2021 5:37 PM	Rate (0)
CJ. Gold Expert Joined: 11/8/2017 Last visit: 12/16/2025 Posts: 360 Rating: (201)	Hi, The AVAL_OP is best suited for use as a simple setpoint. If I understand correctly, you still have some options though to achieve what you describe. There's some examples attached below that you can download and review. The first example retains the AVAL block. The second example replaces the AVAL block with a SELBO_R block. The BVAL_OP block that's shown in both examples is used to activate or deactivate the 'override'. The AVAL_OP block that's shown in both examples is used to set the 'override' value. The 'Auto' value that you refer to will be used as the output whenever the BVAL_OP is set to Off. Any changes made to the BVAL_OP and AVAL_OP would of course be retained after a power cycle of the controller. Regards, Attachment Desktop.zip (601 Downloads)

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This contribution was helpful to 1 thankful Users Argalis24

4/9/2021 10:06 AM	Rate (0)
Argalis24 Posts: 7 Rating: (0)	Thank You!
Argalis24 Posts: 7 Rating: (0)
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