GetValue / SetValue / RNtfValue
GetValue
The GetValue method is used to query the property of the OCA object. If the query was successful, the result is output in the properties tSetting, stSettingMAX and stSettingMIN.
 | Cyclic method call Since several PLC cycles may pass between sending and the response from the device, this method should be executed cyclically. |
Syntax
VAR_INPUT
pLink : POINTER TO ST_Link;
bExecute : BOOL;
END_VAR
Inputs
Name | Type | Description |
|---|---|---|
pLink | POINTER TO ST_Link | Pointer for establishing a connection between OCA objects and the OCA device |
bExecute | BOOL | The method is executed with a positive edge at the bExecute input. |
SetValue
The SetValue method can be used to set the property of an OCA object. If the method was executed successfully, the result is output in the property stSetting.
| Cyclic method call Since several PLC cycles may pass between sending and the response from the device, this method should be executed cyclically. |
Syntax
VAR_INPUT
pLink : POINTER TO ST_Link;
bExecute : BOOL;
nSetting : UDINT;
eCmdMode : E_OcaMessageTypeCmd;
END_VAR
Inputs
Name | Type | Description |
|---|---|---|
pLink | POINTER TO ST_Link | Pointer for establishing a connection between OCA objects and the OCA device. |
bExecute | BOOL | The method is executed with a positive edge at the bExecute input. |
nSetting | UDINT | Value to be assigned to the property of the OCA object. |
eCmdMode | OcaMessageTypeCmd | Depending on whether confirmation is required or not, this input variable is set to E_OcaMessageTypeCmd.OcaCmdRrq or E_OcaMessageTypeCmd.OcaCmd. |
RNtfValue
If the OCA object is prompted to notify changes (using the Subscription method), incoming notifications are read using the RntfValue method.
| Cyclic method call Since several PLC cycles may pass between sending and the response from the device, this method should be executed cyclically. |
Syntax
VAR_INPUT
pLink : POINTER TO ST_Link;
bEnable : BOOL;
nSubscribtionNo : UDINT;
END_VAR
Inputs
Name | Type | Description |
|---|---|---|
pLink | POINTER TO ST_Link | Pointer for establishing a connection between OCA objects and the OCA device. |
bExecute | BOOL | The method is executed with a positive edge at the bExecute input. |
nSubscribtionNo | UDINT | Unique number for localizing the respective subscription. |