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July 24, 2025 at 9:46 am in reply to: Under what circumstances will all channel data be cleared? #16711
Mikhail
ModeratorHello,
Channel data is cleared if no new data comes, or when it’s set to an empty data.Mikhail
Moderatora value greater than 0, such as 5, and then I have to read addresses 0x1000 to 0x1005 to get 5 events
You can send a command to poll the device using Automatic Control Module. Then try to generate events with the same module. Before developing a new driver, it’s worth trying.
From such a driver, would I be able to read any ModBus device registers and generate SCADA events based on them?
Yes.
is there a minimal example of a ModBus device driver available that I could follow?
Check the existing drivers, especially DrvModbus, DrvEnronModbus and DrvSimulator.
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This reply was modified 2 months, 3 weeks ago by
Mikhail.
Mikhail
ModeratorHi,
According to Modbus Parser, the following data is requested:
https://ibb.co/bjB7xMyCDoes it match the Modbus register map?
Mikhail
ModeratorHi,
Probably, you can read the most recent event from the fixed Modbus address. Then you will get it as channel values. How will you process those channel values?Mikhail
ModeratorHi,
Could you copy the packets from the communication line log as text?
They can be found in a text file in the logs directory.Mikhail
ModeratorHi,
You need to upgrade to Rapid SCADA 6 to use that feature.Mikhail
ModeratorHi,
Please copy a part of the communication line log to check data packets, and provide screenshots of the Modbus template.Mikhail
ModeratorHi,
I sent a response on July 08. Is it put in the spam folder?Mikhail
ModeratorThank you for noticing the bug.
Mikhail
ModeratorEverything look fine except Auto Report Module automatically export the Event Report even I didn’t activate it.
It’s a bug. Will be fixed in the next version.
Mikhail
ModeratorEverything look fine except Auto Report Module automatically export the Event Report even I didn’t activate it.
Restart the service after changing the configuration.
Mikhail
ModeratorHi,
After I change culture to en-GB, no errors at log and excel file (Historical Data Report & Elastic Report) when I opened them.
The PlgElasticReport.zh-Hans.xml file includes a line
<Phrase key="WorksheetName">工作表{0}</Phrase>
Likely there is some forbidden character.
Try replacing that line by the similar line from PlgElasticReport.en-GB.xml-
This reply was modified 3 months ago by
Mikhail.
Mikhail
ModeratorIn case of Modbus coils
Cmd > 0 ? 0 : 1
Mikhail
ModeratorHi,
In the output formula of the channel, put something like
Cmd > 0 ? 0xFF : 0x00
If it doesn’t work, make screenshots. -
This reply was modified 2 months, 3 weeks ago by
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