JSR Automation

28/12/2017

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31/07/2014

work in .....

31/07/2014

work properly and petently

04/04/2014

today's WORKING project control panel for....yokohama-india.com
co

02/04/2014

जब हम सफलता के लक्ष्य की और अग्रसर होते हैं
तो हमें तीन स्थितियों का सामना करना पड़ता है....
अपमान
विरोध और
लोगों द्वारा स्वीकारना.
मूर्ख पहले चरण पर रुक जाते हैं,
हारने वाले दूसरे चरण पर रुक जाते हैं पर
जीतने वाले तीसरा चरण पार कर जाते हैं.

02/04/2014

Here is an example of what two rungs in a ladder logic program might look like. In real world applications, there may be hundreds or thousands of rungs.

Typically, complex ladder logic is 'read' left to right and top to bottom. As each of the lines (or rungs) are evaluated the output coil of a rung may feed into the next stage of the ladder as an input. In a complex system there will be many "rungs" on a ladder, which are numbered in order of evaluation.

1. ----[ ]---------+----[ ]-----+----( )
Switch | HiTemp | A/C
| |
+----[ ]-----+
Humid

2. ----[ ]----[\]--------------------( )
A/C Heat Cooling

Line 1 realizes the function: A/C = Switch AND ( HiTemp OR Humid )

Line 2 realizes the function: Cooling = A/C AND ( NOT Heat )

This represents a slightly more complex system for rung 2. After the first line has been evaluated, the output coil "A/C" is fed into rung 2, which is then evaluated and the output coil "Cooling" could be fed into an output device "Compressor" or into rung 3 on the ladder. This system allows very complex logic designs to be broken down and evaluated.

02/04/2014

--+-------[ ]-------+-----------------( )
| Exterior Unlock | Unlock
| |
+-------[ ]-------+
Interior Unlock

The above realizes the function: Unlock = Interior Unlock OR Exterior Unlock

This circuit shows the two things that can trigger a car's power door locks. The remote receiver is always powered. The lock solenoid gets power when either set of contacts is closed.

02/04/2014

------[ ]--------------[\]----------------( )
Close Door Obstruction Door Motor

The above realizes the function: Door Motor = Close door AND NOT(Obstruction).

This circuit shows a pushbutton that closes a door, and an obstruction detector that senses if something is in the way of the closing door. When the normally open pushbutton contact closes and the normally closed obstruction detector is closed (no obstruction detected), electricity is able to flow to the motor which closes the door.

02/04/2014

------[ ]--------------[ ]----------------( )
Key Switch 1 Key Switch 2 Door Motor

The above realizes the function: Door Motor = Key Switch 1 AND Key Switch 2

This circuit shows two key switches that security guards might use to activate an electric motor on a bank vault door. When the normally open contacts of both switches close, electricity is able to flow to the motor which opens the door.

02/04/2014

—( )— A regular coil, energized whenever its rung is closed.
—(\)— A "not" coil, energized whenever its rung is open.
—[ ]— A regular contact, closed whenever its corresponding coil or an input which controls it is energized.
—[\]— A "not" contact, closed whenever its corresponding coil or an input which controls it is not energized.

The "coil" (output of a rung) may represent a physical output which operates some device connected to the programmable controller, or may represent an internal storage bit for use elsewhere in the program.

07/03/2014

Electronics Vs Electrical

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