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5.5.3 Network rules for series and parallel in LAD
Rules for placing contacts
Each network must begin with a contact.
The network cannot be terminated by contact.
Rules for placing coils
The network can not start with the coil
;
The coil is used to terminate the logical
network.A network may have a number of coils, and the coils are located on a
parallel branch of the network.Could not be connected in series with more than one
coil in the network
Rules for placing blocks
If the block has ENO, the enable bit can be extended to the out of block;This means
that you can place more instructions behind the block.In the network, you can
connect in series with a number of boxes with ENO.If there is no ENO in the box, no
instruction can be placed on the following.
Network size limit
Cell is the area which is placed instruction.In the network, a single network can
extend 32 cells Vertically or 32 cells horizontally.
5.5.4 How to input commands in LAD
Line
You can use horizontal and vertical lines to connect elements to finish the network.
Double click the instruction tree
1.Place the cursor in the position you want to edit in the program editor
window.Click the mouse, there will be a selection box.
2.Select the required instruction, double click it.
Summary of Contents for PR-12 Series
Page 26: ...19 1 xLogic CPU PR 12 Series CPU PR 14 and PR 18 series 1 PR 18 CPU 2 PR E extension...
Page 27: ...20 PR 24 series...
Page 47: ...40 5 3 Instruction tree...
Page 58: ...51 5 3 10 Instructions Instructions will be explained in detail in the instructions section...
Page 93: ...86 2 Enter the illegal real number Example...
Page 127: ...120 Example...
Page 139: ...132 Special memory bit SM1 0 Zero result SM1 1 overflow SM1 2 Negative result Example...
Page 149: ...142 Example...
Page 152: ...145 Example ATCH instruction only needs to be connected once...
Page 154: ...147 Example...
Page 175: ...168...
Page 217: ...210 Example Four arithmetic operation Main program...
Page 218: ...211 Subroutine...
Page 252: ...245 10 8 Example of serial port free port communication Program 1...
Page 254: ...247 10 9 Example of CAN free port...
Page 258: ...251 Conversion of Process quantity and set value unit...