OPC UA interfaces for plastics and rubber machinery – Peripheral devices – Part 1: Temperature control devices
10.25 ExternalChannelType
ExternalChannelType includes information for monitoring or controlling of external temperature, flow rate or pressure channels. (One zone of the TCD is split into several external channels).
Table 19 – ExternalChannelType Definition
Attribute
Value
BrowseName
ExternalChannelType
IsAbstract
False
References
Node Class
BrowseName
DataType
TypeDefinition
Other
Subtype of 0:BaseObjectType defined in OPC UA Part 5
0:HasComponent
Method
SwitchOn
O
0:HasComponent
Method
SwitchOff
O
0:HasProperty
Variable
SwitchedOn
0:Boolean
0:PropertyType
O, RO
0:HasComponent
Object
Temperature
3:MonitoredParameterType
O
0:HasComponent
Variable
TemperatureMainLine
0:Double
0:AnalogItemType
O, RO
0:HasComponent
Variable
TemperatureReturnLine
0:Double
0:AnalogItemType
O, RO
0:HasComponent
Object
TemperatureDifference
3:MonitoredParameterType
O
0:HasComponent
Object
FlowRate
3:MonitoredParameterType
O
0:HasComponent
Variable
PressureMainLine
0:Double
0:AnalogItemType
O, RO
0:HasComponent
Variable
PressureReturnLine
0:Double
0:AnalogItemType
O, RO
0:HasComponent
Object
PressureDifference
3:MonitoredParameterType
O
0:HasComponent
Variable
ControlMode
0:UInt16
0:MultiStateValueDiscreteType
O, RW
NOTE: The MonitoredParameterType is defined in OPC 40083. If the Parameter is not only monitored but controlled, the subtype ControlledParameterType can be used.
10.25.1 SwitchOn
Description:
Switch method of the external channel for switching on. SwitchedOn shows the actual state of the channel.
Signature
SwitchOn ();
10.25.2 SwitchOff
Description:
Switch method of the external channel for switching off. SwitchedOn shows the actual state of the channel.
Signature
SwitchOff ();
10.25.3 SwitchedOn
Description:
Information if the external channel is switched on. If the methods SwitchOn and SwitchOff are provided, also this Property shall be available.
Example:
TRUE
10.25.4 Temperature
Description:
Setting and/or monitoring of the temperature
Unit:
°C or °F
Example (for ActualValue):
120
10.25.5 TemperatureMainLine
Description:
Actual temperature in the main line
Unit:
°C or °F
Example:
120
10.25.6 TemperatureReturnLine
Description:
Actual temperature in the return line
Unit:
°C or °F
Example:
115
10.25.7 TemperatureDifference
Description:
Setting and/or monitoring of the temperature difference between return and main line. Positive if temperature in return line is higher than in main line.
Unit:
°C, K or °F
Example (for ActualValue):
5
10.25.8 FlowRate
Description:
Setting and/or monitoring of the flow rate.
Unit:
l/min, gal/min or ft³/min
Example (for ActualValue):
10,0
10.25.9 PressureMainLine
Description:
Actual value of the pressure in the main line.
Unit:
bar or lbf/in² (=psi)
Example:
6
10.25.10 PressureReturnLine
Description:
Actual value of the pressure in the return line.
Unit:
bar or lbf/in² (=psi)
Example:
5
10.25.11 PressureDifference
Description:
Setting and/or monitoring of the pressure difference between main and return line
Unit:
bar or lbf/in² (=psi)
Example (for ActualValue):
2.5
10.25.12 ControlMode
Description:
Defines to which setpoint the external channel is controlled
The TypeDefinition is MultiStateValueDiscreteType,so the PropertiesEnumValues and ValueAsText must be filled with the supported values out of Table 20.
