The low and high limit parameters for supply voltage must be set within the specified voltage range of the control unit.
This function block monitors voltages, temperatures and the program cycle time of the control unit. All the voltages and temperatures have high and low limits, both signaled with a boolean output when exceeded. Each measurement limit has it's own parameter. Only the high limit of the program cycle time can be set and monitored.
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The low and high limit parameters for supply voltage must be set within the specified voltage range of the control unit.
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Input variable name |
Data type |
Range |
Description |
i_SupplyVoltage |
UINT |
|
Supply voltage measured value. |
i_Ref5V |
UINT |
|
Reference 5V measured value. |
i_Ref12V |
UINT |
|
Reference 12V measured value. |
i_Temperature |
UINT |
|
Temperature measured value. |
i_SupplyVoltageHighLimit |
UINT |
|
High limit of supply voltage. 100 = 1.00 volts. |
i_SupplyVoltageLowLimit |
UINT |
|
Low limit of supply voltage. 100 = 1.00 volts. |
i_Ref5VHighLimit |
UINT |
|
High limit of 5V reference voltage. 100 = 1.00 volts. |
i_Ref5VLowLimit |
UINT |
|
Low limit of 5V reference voltage. 100 = 1.00 volts. |
i_Ref12VHighLimit |
UINT |
|
High limit of 12V reference voltage. 100 = 1.00 volts. |
i_Ref12VLowLimit |
UINT |
|
Low limit of 12V reference voltage. 100 = 1.00 volts. |
i_TempHighLimit |
INT |
|
High limit of temperature 1. 10 = 1 °C. |
i_TempLowLimit |
INT |
|
Low limit of temperature 1. 10 = 1 °C. |
i_CycleTimeHighLimit |
UINT |
|
High limit of application cycle time in milliseconds. |
Output variable name |
Data type |
Range |
Description |
o_SupplyVoltage |
UINT |
|
Scaled value of module supply voltage. 100 = 1.00 volts.. |
o_Ref5V |
UINT |
|
Scaled value of 5 volt reference voltage. 100 = 1.00 volts. |
o_Ref12V |
UINT |
|
Scaled value of 12 volt reference voltage. 100 = 1.00 volts. |
o_Temperature |
INT |
|
Calculated value of temperature 1. 10 = 1 °C |
o_CycleTime |
UINT |
|
Latest application cycle time in milliseconds |
o_CycleTimeAverage |
UINT |
|
Average application cycle time in milliseconds. |
o_SupplyVoltageHigh |
BOOL |
|
TRUE if supply voltage is higher than limit |
o_SupplyVoltageLow |
BOOL |
|
TRUE if supply voltage is lower than limit |
o_Ref5VHigh |
BOOL |
|
TRUE if 5V reference voltage is higher than limit |
o_Ref5VLow |
BOOL |
|
TRUE if 5V reference voltage is lower than limit |
o_Ref12VHigh |
BOOL |
|
TRUE if 12V reference voltage is higher than limit |
o_Ref12VLow |
BOOL |
|
TRUE if 12V reference voltage is lower than limit |
o_TemperatureHigh |
BOOL |
|
TRUE if temperature 1 is higher than limit |
o_TemperatureLow |
BOOL |
|
TRUE if temperature 1 is lower than limit |
o_CycleTimeHigh |
BOOL |
|
TRUE if application cycle time is higher than limit |
This example is generic for all c167 control units. Measured analog inputs may vary in different hardware.
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Source file Topic000462.htm
Last updated 4-Sep-2025