And Load And Or Load; Bit Control Instructions; Output And Output Not - Out And Out Not - Omron SYSMAC C20P Operation Manual

Bit Control Instructions

5–5–2

AND Load and OR Load

AND Load – AND LD
OR Load – OR LD
Description
Flags
5–6

Bit Control Instructions

5–6–1 Output and Output NOT – OUT and OUT NOT
Output – OUT
Output NOT –
OUT NOT
Limitations
Description
Ladder Symbol
Ladder Symbol
When the above instructions are combined into blocks that cannot be logi-
cally combined using only OR and AND operations, AND LD and OR LD are
used. Whereas AND and OR operations logically combine a bit status and an
execution condition, AND LD and OR LD logically combine two execution
conditions, the current one and the last unused one.
AND LD and OR LD instruction are not necessary to draw ladder diagrams,
nor are they necessary when inputting ladder diagrams directly, as is possi-
ble from the GPC. They are required, however, to convert the program to and
input it in mnemonic form. The procedures for these, limitations for different
procedures, and examples are provided in 7–5 Inputting, Modifying and
Checking the Program .
In order to reduce the number of programming instruction required, a basic
understanding of logic block instructions is required. For an introduction to
logic blocks, refer to 7–2–3 Logic Block Instructions .
There are no flags affected by these instructions.
There are five instructions that can be used generally to control individual bit
status. These are OUT, OUT NOT, DIFU(13), DIFD(14), and KEEP(11).
These instructions are used to turn bits ON and OFF in different ways.
Ladder Symbol
Ladder Symbol
Any output bit can be used in only one instruction that controls its status. See
3–3–1 I/O Words for details.
OUT and OUT NOT are used to control the status of the designated bit ac-
cording to the execution condition.
0000
0001
0000
0002
Operand Data Areas
B
Operand Data Areas
B
Section 5–6
0002
0003
0001
0003
B: Bit
IR, HR, TR
B: Bit
IR, HR, TR
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