HmiGuide
HmiGuide
·Posted in Smart HMI - WebIQ Designer and Server

Usage of monoflop

As far as I understand it, the WebIQ monoflop feature can be used to detect communication interruptions, e.g. when a motor is jogging.

- How does this have to be configured in WebIQ?
- Is there an example?
- How do you recognize the communication interruption in the PLC?
- A brief explanation of the technical background would also be very helpful to understand how it is working.

Best reply by HmiGuide

Result

  • This feature could not be used with ctrlX, because ctrlX OpcUa server does not support changing OpcUa variables in the server
  • Even if the ctrlX OpcUa Server would support this, the recommendation from BoschRexroth Monoflop is: not to use it, because in addition to the HMI and PLC project, there is a third place (the OpcUa Server) involved. This makes communication unnecessarily difficult to understand and maintain.

The iq-heartbeat widget can be used to stop jogging when communication is interrupted. It can send a heartbeat counter to the PLC and evaluate a heartbeat counter of the PLC. This allows a communication interruption to be detected and reacted to on both sides.

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