• Home
• Funktionen/Funktionsbausteine - Referenz
• Safety FBs in PLCopen_SF_V2_00 Library
• SF_OutControl
• StaticControl input

StaticControl input

State-controlled input for optional specification of an additional operation stop when the request for the safety-related function has been removed and/or the function block has been activated.

This input parameter optionally specifies an additional operation stop of the standard controller in order to reduce the risk of an unintended start-up. An expected operation stop and operation start are evaluated by the function block at the ProcessControl input.

Data type: BOOL
Initial value: FALSE

Connection: Connect this input to a constant to determine whether you want to specify an additional operation stop.

Hinweis Plan the behavior of the stop function independently corresponding to the result of the risk analysis performed for the safety-related function.

If the function block is activated (Activate = TRUE), the possible values at this input lead to the following function block behavior:

Value	Description
TRUE	Before the request for the safety-related function has been removed and/or the function block has been activated, no additional operation stop is required at ProcessControl. A permanent TRUE signal at ProcessControl (running operation) then switches the S_OutControl enable output to SAFETRUE, depending on the states at the other inputs. Toggling signal levels at the ProcessControl input in this case are interpreted by the function block as operation stop and operation start. The toggling signal level thus controls the S_OutControl enable signal of the function block (depending on the states at the other inputs). Refer to the warning below this table.
FALSE	Before the request for the safety-related function has been removed and/or the function block has been activated, an additional operation stop is required at ProcessControl. A (permanent) TRUE signal at ProcessControl results in an error message following function block activation and removal of the request for the safety-related function. The S_OutControl enable output is not switched to SAFETRUE. Once the function block has been activated and the request for the safety-related function has been removed, ProcessControl must first be switched from FALSE to TRUE (positive signal edge), which signals an operation start in the standard controller. With subsequent ProcessControl = TRUE (running operation), the SAFETRUE state is requested for the S_OutControl enable output. Hinweis Active start-up/restart inhibit? If a start-up inhibit (S_StartReset) or restart inhibit (S_AutoReset) is specified, evaluation of the ProcessControl input only occurs after the inhibit has been removed (by a positive edge at the Reset input).

WARNUNG

Unintended machine operation Verify that the S_OutControl enable signal only controls the process directly if this does not adversely affect the safety-related function. Validate the overall safety-related function, including the start-up/restart behavior of the process, and thoroughly test the application.