|
LDmicro Forum - Master relay |
|||
|
|
|
(you are viewing a thread; or go back to list of threads)
Master relay (by Teo Zee Von)
Could anyone give me an example how master relay works?
(no subject) (by Jonathan Westhues)
The master control relay instructions are used in pairs, to delimit a block of rungs. If the rung-in condition for the first master control relay instruction is false, then the rung-in condition for all the rungs inside that block will be false. (The rung-in condition for a rung is otherwise always true.)
In the example, Yd is always equal to Xd. When Xmcr is true, Ya = Xa, Yb = Xb, and Yc = Xc. But when Xmcr is false, Ya, Yb, and Yc are always false.
(no subject) (by Teo Zee Von)
Thank you very much.
Post a reply to this comment:
|
|
|