ISPSoft User Manual

Chapter 9 Function Block Diagram
an instruction type in the Classification box.
Users can select an applied instruction, a comparison contact, or a function block
here.
If users unselect the Auto Close checkbox, they can insert instructions or function
blocks continuously.
‣ Method 3
Click the position into which an applied instruction, a comparison contact, or a function
block will be inserted, and type the applied instruction, the comparison contact
instruction, or the function block definition. As soon as the applied instruction, the
comparison contact instruction, or the function block definition is typed, a box which can
be edited appears. After the typing of the applied instruction, the comparison contact
instruction, or the function block definition is complete, users can press Enter on the
keyboard or click OK at the right side of the box. (The applied instruction, the
comparison contact instruction, and the function block definition are case-insensitive.)
If users want to insert a function block, they have to type the function block definition,
and they can not type the operands specifed in the function block. If users want to insert
a comparison contact or an applied instruction, they have to type the comparison
contact instruciton or the applied instruction, and they can type the operands specified
in the comparison contact instruciton or the applied instruction. The users do not have
to type all the operands specified in the comparison contact instruciton or the applied
instruction. The system will assign the operands typed to the corresponding boxes,
and ??? will appear in the boxes where there are no operands. Besides, if the operands
typed include a symbol which is not declared, the Add Symbol window will appear after
the users press Enter on the keyboard. Please refer to programming manuals for more
information about instructions.
(3) After an applied instruction, a comparison contact, or a function block is inserted
successfully, users have to type operands.
*. If the Auto-leading ‘Add Symbol’ Dialog checkbox in the Options window is selected, the Add Symbol window will
appear automatically after users type a symbol which is not declared. Please refer to section 2.3.1 for more
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