Modbus Energy driver: Wrong value of status variable for connection state in case of 'secondary connection failed'

• Related Articles

• FAQ: How can I monitor and react on the communication status of my devices with zenon?

  Data quality is very important to the integrity of a HMI or SCADA system. As such, zenon has numerous ways to monitor the communication status of different devices within your automation environment. Here are some options that you can use in your ...

• MODBUS_ENERGY: Variables remain without value / status under specific circumstances

  Summary Under specific circumstances, the MODBUS_ENERGY driver configured to bundle connections has connections for which variables remain without value and without status, due to connectivity issues for another connection using the same IP address. ...

• Modbus_Energy driver: Status of TCP/IP connection is not displayed

  Description For variables from the Modbus Energy driver, the status of the TCP/IP connection is not displayed in the Service Engine for suitable elements. This behavior has been changed. The connection status is now displayed. To benefit from this ...

• MODBUS_ENERGY: invalid modbus response to read holding register request does not set INVALID status for variables but uses random value with SPONT instead

  Summary When a Modbus Slave returns a response with an invalid error code "00", according to the modbus specification, the MODBUS_ENERGY driver does not consider this an error and sends random values to the variables with status SPONT to the runtime. ...

• When writing a value to a STRING variable of MODBUS_ENERGY Driver with more than 64 characters, only 64 characters including null termination are written.

  Summary When writing more than 64 characters to a STRING variable of MODBUS_ENERGY Driver, only 64 characters including null Termination are written. DescriptionWhen writing more than 64 characters to a STRING variable of MODBUS_ENERGY Driver, only ...