Hello Jherson;

Which LED turns ON in the PLC when you disconnect the UPS or the HMI?

When a fault leads to a diagnostic  LED to turn ON, an entry is logged in the CPU's diagnostic buffer. Please open the buffer, use the Save As.. button you see in the diagnostic buffer screen to create a .txt file containing all the logged messages in the buffer. Post the file as an attachment here so we can examine it along with you. That way, we might be able to provide hints for your problem.

Hope this helps,

Daniel Chartier 

Hi Jherson Andrade Tenorio,

you have defined the TP1200 Comfort and the UPS1600 as IO devices. Therefore, the PLC - acting as a PROFINET IO controller - wants to perform a cyclic data exchange with the devices. If this fails, the controller will report an error. You can avoid this by deactivating the IO device before unplugging it. This can be done with the "D_ACT_DP" instruction.

First of all, it should be clear that the devices are to be used as IO devices. In most cases a TP1200 Comfort is not used as IO device because it has no buttons or LEDs that can be used by the PLC. For the UPS1600 some data exchange may be useful if the PLC needs to react to a power interruption.

Kind regards
Stefan

Hello Jherson;

The Sitop UPS 1600 is capable of using the Profinet network to send diagnostic data on its present status to the IO Controller it is linked to.

https://support.industry.siemens.com/cs/ca/en/view/84977415

"The battery status and various actual values, for example voltage and current, are output via the Ethernet/PROFINET and USB interfaces. Thanks to the integrated web server, remote diagnosis is also possible."

So you could monitor the status of the UPS and determine if it is actually online or if the D_ACT_DP block is removing it from the IO controller's polling list.

Hope this helps,

Daniel Chartier