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6. Explanation of Commands
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6.2 Command Formats
6.2.1 How to Read the Command Table
The basic command and function command explanations are shown below.
Example of D+ command
D+
······BIN 32-bit addition
Usable device
Bit device
Word device
Con-
stant
Pointer Level
X Y M L SM F T C D R Z K H P N
Digit
desig-
nation
No. of
steps
Index
S1
S2
D
4/5
The command signal is indicated.
A circle is indicated if digit
designation of the bit device is
possible.
The No. of steps of the D+ command is indicated.
This is a No. of steps required for the store in the controller.
In programming with MELSEC PLC development tool (GX Developer),
the displayed No. of steps may be different from this No. of steps.
Description such as "4/5" indicates that the No. of steps is different
depending on the designation device. For the 32-bit command, two
steps are required for the constant. In the example for the D+ command,
if S2 is the word device, the No. of steps will be 4 steps, and if S2 is the
constant, the No. of steps will be 5 steps.
The commands that can use an
index (Z) are circled.
Such a command is only the
MOV command in this manual.
The devices that can be used
with the D+ command are circled.
setting data
S2
S1
D
The D+ command circuit display format is indicated.
Addition command
D+
D+
S2
S1
D
Addition data or head No.
of device where addition
data is stored.
Addition data or head No.
of device where addition
data is stored.
Head No. of device to
store addition results.
The functions first, then execution conditions, then program examples are described on the following
pages.