July 2004
Intermediate to advanced
352 pages
9h 30m
English
Content preview from Mitsubishi FX Programmable Logic Controllers, 2nd Edition
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//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH007.3D – 80 – [71–90/20] 19.6.2004
9:08PM
Ladder diag ram ^ INTLK1
Principle of ope ration
1. Switch the Reset X3, ON.
2. The basic circuit consists of three latch circuits.
3. When any one of the Inputs X0, X1, X2 is operated, it will energise and latch its
corresponding Output Solenoid.
4. At the same time, if there is another output which has been previously energised and
latched, then the normally closed contact of the input, which has just operated, will
break the latc h to that particular output. Hence, only one output can be on, at any
one time.
5. The operating of X3 will
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