====== Mutex Lock ======

{{:en:mervis-ide:35-help:mutexlock.png}}

===== Function name =====

MUTEXLOCK

===== Function =====

The MutexLock function locks the communication lock (for SSCP server, Modbus server, LCD, ...). It has no parameters and always returns //false//. It can be used to protect the variable changes in a structure at the moment the structure is processed in ST: the block closes between //MutexLock// and //MutexUnlock//. The number of //MutexLock// and //MutexUnlock// calls must be equal. Lock is active in one cycle only: after a cycle finishes, the lock opens.\\


===== Outputs =====

|Output|Type|Description|
|=>    |SINT|Output     |