OEM BL2500 User Manual page 32

PLC BL2500 User's Manual
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6. Follow Steps 6 to 11 in Section 3.4.1 to create and populate the application's Dictionary with SW1
and SW2 Boolean input variables (connected to Channel 1 and 2 of the bl25di I/O board
respectively); and LED1 Boolean output variable connected to Channel 1 of the bl25led I/O board.
7. On the B25TEST2 – Programs window double-click on LDtest1 program. The Quick Ladder
Diagram Editor contains an editing grid, a logical matrix where each cell of the matrix may contain
up to one LD symbol. Press F2: Contact on the left button
rung. A new rung with one contact and one coil is created.
8. Double click the rung comment (* *) cell to insert a comment such as (*Exclusive OR logic for
switching on LED*).
9. Double click the contact
10. With the SW1 contact selected, press F3: Contact on the right button
11. Double click the new contact and select SW2 variable. Click once on the Coil/contact type button
to negate this contact.
12. Select the Select button
contact and dragging the mouse over to the next contact before releasing the mouse button. Press
F4: Parallel contact button
13. Repeat steps 9 and 11 except negate the SW1 contact with the Coil/contact type button this time
instead of the SW2 contact.
14. Double click on the coil
15. The LDtest1 program should now appear as follows:
16. Save the program by selecting File menu → Save. Press OK button on the Update diary window.
Close the LDtest1 – QuickLD Program window.
17. Follow Steps 17 to 25 in Section 3.4.1 to compile the application and download it to the Target PLC.
18. Double-click on LDtest1 program. The LDTEST1 – Quick LD Programs window is displayed with
the variables in BLUE or RED colour depending on its current state, FALSE or TRUE respectively.
Press the SW1 (short-circuit digital input IN00) and the LED1 will be turned ON as well as the state of
LED1 in the Programs window will change. The PLC program implements a Boolean XOR operation
on SW1 and SW2 with the result set on the LED1.
OEM Technology Solutions
on the rung and select SW1 for an input.
on the toolbar. Select both contacts on the rung by clicking on one
to create two new contacts in parallel with the selected contacts.
on the rung and select LED1 for an output.
Running Sample Applications
on the toolbar to insert a new
on the toolbar.
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