Omron SYSMAC C20P Operation Manual page 117

Converting to Mnemonic Code
110
Address Instruction
0000 LD
0001 AND NOT
0002 LD
0003 AND
0004 OR
0005 OR
0006 AND LD
0007 OUT
Although the following diagram is similar to the one above, block b in the dia-
gram below cannot be coded without being broken down into two blocks
combined with OR LD. In this example, the three blocks have been coded
first and then OR LD has been used to combine the last two blocks followed
by AND LD to combine the execution condition produced by the OR LD with
the execution condition of block a.
When coding the logic block instructions together at the end of the logic
blocks they are combining, they must, as shown below, be coded in reverse
order, i.e., the logic block instruction for the last two blocks is coded first, fol-
lowed by the one to combine the execution condition resulting from the first
logic block instruction and the execution condition of the logic block third from
the end, and on back to the first logic block that is being combined.
Block
b1
0000 0001 0002 0003
0004 0202
Block
b2
Block Block
a b
Data
0000
0001
0002
0003
0201
0004
—
0501
Section 7–2
0502