Endress+Hauser Liquiline CM44 series - How-To Run a Calibration; How-To Start a Cleaning

SD01189C/07/EN/04.17
Endress+Hauser
30 © Copyright Dec. 2016
Abort procedure with error
DO
Read FunctionExecutionStatus
WHILE FunctionExecutionStatus is “Busy” OR
FunctionExecutionStatus is “MeasurementInProgress”
IF FunctionExecutionStatus is NOT “MeasurementFinished”
Abort procedure with error
// now measurement was successfully executed
If the user locally switches to manual or automatic the Modbus write requests gets an error response.
An error is also, if a measurement shall be executed and another action is running (e.g. a calibration). As
the above pseudo code shows, this will be detected as an error.
6.1.3.2 How-to run a Calibration
The analyzer has to be in the operation mode “Fieldbus” to start an action. The current operation mode can
be verified by pressing the soft-key labeled “MODE” at the device menu or by reading the Modbus register
MANUAL_CHANGE_STATUS.
// execute a measurement
Write AnalyzerRequest “Measurement”
IF Write access returns error
Abort procedure with error
DO
Read FunctionExecutionStatus
WHILE FunctionExecutionStatus is “Busy” OR
FunctionExecutionStatus is “MeasurementInProgress”
IF FunctionExecutionStatus is NOT “MeasurementFinished”
Abort procedure with error
// now measurement was successfully executed
If the user locally switches to manual or automatic the Modbus write requests gets an error response.
An error is also, if a measurement shall be executed and another action is running. As the above pseudo
code shows, this will be detected as an error.
6.1.3.3 How-to start a Cleaning
The analyzer has to be in the operation mode “Fieldbus” to start an action. The current operation mode can
be verified by pressing the soft-key labeled “MODE” at the device menu or by reading the Modbus register
MANUAL_CHANGE_STATUS.
// execute a measurement
Write AnalyzerRequest “Measurement”
IF Write access returns error
Abort procedure with error
DO
Read FunctionExecutionStatus
WHILE FunctionExecutionStatus is “Busy” OR
FunctionExecutionStatus is “MeasurementInProgress”
IF FunctionExecutionStatus is NOT “MeasurementFinished”
Abort procedure with error
// now measurement was successfully executed
If the user locally switches to manual or automatic the Modbus write requests gets an error response.