WECON Technology Co., Ltd.
6
Program example:
Basic points to remember:
- Use the AND and ANI instructions for serial connection of contacts. As many
contacts as required can be connected in series (see following point headed
“Peripheral limitations”).
- The output processing to a coil, through a contact, after writing the initial OUT
instruction is called a “follow-on” output (for an example see the program above; OUT
Y4). Followon outputs are permitted repeatedly as long as the output order is correct.
Peripheral limitations:
• The PLC has no limit to the number of contacts connected in series or in parallel.
However, some programming panels, screens and printers will not be able to display
or print the program if it exceeds the limit of the hardware. It is preferable for each
line or rung of ladder program to contain up to a maximum of 10 contacts and 1 coil.
Also, keep the number of follow-on outputs to a maximum of 24.
7. Or, Or Inverse
To Next Page
Loading...
Need help?
General