Mitsubishi Electric M800VW Series Programming Manual page 85

M800V/M80V Series PLC Programming Manual (1/2)
6 Explanation of Instructions and Functions
6.1 Instruction List
(5) Indicates the type of processing that is performed by individual instructions
(D) + (S) (D)
Indicates 16 bits
(6) The details of conditions for the execution of individual instructions are as follows.
Symbol
No symbol re- Instruction executed under normal circumstances, with no regard to the ON/OFF status of conditions prior to the
corded instruction.
If the precondition is OFF, the instruction will conduct OFF processing.
Executed during ON; instruction is executed only while the precondition is ON. If the precondition is OFF, the in-
struction is not executed and no processing is conducted.
Executed once at ON; instruction executed only at rising edge when precondition goes from OFF to ON. Following
execution, instruction will not be executed and no processing conducted even if condition remains ON.
Executed once at OFF; instruction executed only at falling edge when precondition goes from ON to OFF. Fol-
lowing execution, instruction will not be executed and no processing conducted even if condition remains OFF.
(7) Indicates the number of steps when storing each instruction.
This is the number of steps that is consumed when each instruction is stored in built-in ROM. Refer to "2.8 Storing PLC
Processing Program and Execution Mode" for details.
When ZR device/Z device is used for each instruction argument, the number of steps at storage will increase/decrease
from the described contents. Refer to "6.7 Counting Step Number" for details.
(8) Indicates the number of steps when executing each instruction.
This is the number of steps that is consumed in the PLC processor execution area when each instruction is executed. The
number of steps may be different from that of when stored in built-in ROM. Refer to "2.8 Storing PLC Processing Program
and Execution Mode" for details.
(9) Indicates that the instruction is usable in Structured Text.
○ : Instruction prepared as a function for common instructions
-: Instruction not prepared as a function for common instructions (using an operator)
(10) Indicates pages explaining each instruction.
IB-1501667-B
(D+1,D) + (S+1,S) (D+1,D)
16 bits 16 bits
Indicates 32 bits
D+1 D
Upper 16 bits Lower 16 bits
Execution condition
64