Siemens SINUMERIK 840D sl Operating Manual page 428

Edit PLC user program (828D only)
21.5 View of the program blocks
Note
Logical AND (serial contact) and logical OR (parallel contact) are not possible.
The bit combinations comprise one or several logical operations and the assignment to an
output / bit memory.
If the cursor is moved further to the left with the arrow key, the type of assignment or a logic
operation can be selected. A further logic operation cannot be placed to the right of an
assignment. A network must always be terminated with an assignment.
References
For further information about PLC programming, please refer to:
Basic Functions Function Manual, PLC for SINUMERIK 828D (P4)
Procedure
428
1. An INT100 or INT101 routine has been selected.
2. Press the "Edit" softkey.
3. Position the cursor on a network.
4. Press the "Insert network" softkey.
- OR -
Press the <INSERT> key.
If the cursor is positioned on "Network x", a new, empty network is inser‐
ted behind this network.
5. Position the cursor on the desired element below the network title and
press the "Insert operation" softkey.
The "Insert Operation" window appears.
6. Select the desired bit operation (NC contact or NO contact) or assignment
and press the "OK" softkey.
7. Press the "Insert operand" softkey.
8. Enter the logic operation or the command and press the <INPUT> key to
complete the entry.
9. Position the cursor on the operation that you want to delete and press
the "Delete operation" softkey.
- OR -
Position the cursor on the title of the network that you want to delete and
press the "Delete network" softkey.
Operating Manual, 05/2017, A5E40869190
Grinding