SEMA

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IEC / CEI 1131-3 Compliant

 

sema

 

This function block implement a semaphore function. Normally this function is used to syncronize events. The BUSY output is activated by a TRUE condition on the CLAIM input and it is de-asserted by a TRUE condition on the RELEASE input.

 

 

Net plugs

 

Plug

Description



CLAIM

The CLAIM input

 

 

RELEASE

The RELEASE input

 

 

BUSY

The BUSY output

 

See also : RS, SR