Yaskawa MP900 Series Machine Controller for Standard Operation - Manual (Page 404)

7.3 Creating Ladder Logic Programs
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2. Select Debug (G) and then REFER (R) from the programming menus.
3. The program window called in step 1. will be opened.
1 The refer operation cannot be executed in Offline Mode.
2 The current values when the relevant SEE or FSTART instruction was executed will be shown in any
drawing or function program opened with the refer operation.
„ Returning to Previous Windows
The window from which the refer operation was used can be returned to in the reverse order.
Select Debug (G) and then BACK (B) from the programming menus to return to the previ-
ous windows in reverse order.
Up to 4 windows that have been previously opened can be returned to in the reverse order.
7.3.7 Creating Branch Circuits
When branches and parallel connections are used in relay circuits, the cursor moves accord-
ing to branches, connection points, and parallel connections. The cursor position for the next
instruction switches for branch and connection points. The cursor position can be reserved
or released by alternately designating branch and connection points. Branch and connection
point designation are found on the Command Selection Menu. Mnemonics can also be used
to designate branches or connection points.
„ Setting Branches
As shown in the following diagram, branches are display to the left of a COIL instruction,
and input positions for parallel circuits are reserved starting from the branch. The branch
will be automatically displayed without setting it if a contact is to be connected to the power
line.
The procedure to set the branch shown in the above diagram is outlined below.
1. Select the N.O. CONTACT instruction.
Select Command (O), RELAY (R), and then Branch (T) from the programming menus.
INFO
1 0000 IB00000 OB00000
1 0002 IB00002 OB00001
IB00001
Branch
1 0000 IB00000