1.1.2 Basic Use
2. The setup menu should be displayed. The first step is to ensure the menu displays the correct values.
Network Address (NET000)(NODE001)(BIN)
PC Interface (HostLink)(Port1)(9600)
Printer (Wide carriage graphics)
To change one of these values you may,
a) use the cursor keys to move to it, then press return.
b) select the letter in front of the choice, using the keyboard.
3. Some options for programming control are,
<END> brings up programming menu
4. Clear the programming menu. At this point the software is NOT connected to the PLC. After selecting the choices below, the memory will be cleared, and there will be no old PLC programs in memory.
(Note: the way the menu is layed out the [] brackets are a main menu, the line below is a choice from the menu, and any following choices will be listed after these two.)
5. To create a new program we must put the PLC in write mode, press <F2>. Attention should be drawn to the top, and bottom of the screen, the bottom will show function key based commands, and the top of the screen will show the user the current operation mode.
6. We will enter the following ladder,
a) Look at the bottom of the screen. Notice a NO contact is <F4>, press this to start. Next enter ‘100’ and watch the symbol at the bottom of the screen. When you press return the symbol at the bottom of the screen will be added to the ladder logic. The cursor will now move to the next position that the next ladder logic element will be added at. (If you have made a mistake, please continue for now, and we will learn how to correct these later.)
b) To make the NC contact, we must first select a NO <F4> and then use a NOT <F9>. Notice the NC on the bottom of the screen. Now enter the address ‘105’ and accept the contact. (Note: <ENTER> is not always specified, and is often assumed.)
c) Create an output coil by pressing <F7> and enter ‘200’. A full ladder rung will now appear on the screen, and the cursor will appear on the next free line.
d) Start entering the next line of ladder with,
This will result in all but the branched NO contact. To put this in, use the branched contact symbol,
7. Next, an end line MUST be entered (always end all programs with this, if it is not present, many problems will occur.
move the cursor to the start of the next line.
The END is considered one of many special functions, refer to the special function number table for more codes. (Note: Although this appraoch is awkward, it would be more difficult to do most other ways.)
8. A mistake was intentionally made during entry. To correct this we use the cursor keys to move back to the problem element. When it is highlighted by the cursor it may be changed (it will also appear at the bottom of the screen).
a) move to NO108, this should be NO106.
b) if 00108 is shown at the bottom of the screen, type,
9. The program should now be complete. Whenever a program has been changed, it must be stored first.
While storing, logic is checked, and the top of the screen flashes. If the program has stored correctly, the main screen will go blank. You can put the LSS software in read mode and look at the logic.