Of Steps - Mitsubishi Electric MELDAS C6 Programming Manual

6.2.2 No. of Steps
The basic No. of steps in the sequence command includes step 1 to step 6.
Main examples of each step are shown below.
Basic No.
Command (mnemonic)

of steps

LD, ANI, ANB, ORB,
Step 1
STC, CLC, FEND, RET, P**
INC, DEC, PLS, PLF,
Step 2
CJ, CALL
Step 3 MOV, =, BCD, OUT, T
Step 4 DMOV, +, -, XCH
Step 5 D+, D-
Step 6 D*, D/
As shown above, the command code, source and destination in basic No. of steps for the command
are equivalent to one step each. Only a part of commands, the 32-bit command constant K, H, a part
of command code B, SB, V, T or C device uses two steps.
(Note1) The command executed only at the leading edge (***P command) uses 6 steps bigger than
the command executed when ON (*** command).
For example, the MOV command uses 3 steps, and the MOVP command uses 9 steps.
(Note2) If the constant value in the DMOV or D* command, etc., is small, a display in which there is a
space equivalent to one step will occur between the source (S) and destination (D) or
between the source (S2) and destination (D). (Section marked with * in diagram.)
6. Explanation of Commands
6.2 Command Formats
DMOV
D *
- 97 -
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Circuit display
FEND
IN C D10
CALL P20
MOV
K100 D100
= D0 D1
BCD D0 D1
T1 K1
DMOV K12345
+ D0
K100
XCH D0
2 steps worth
H12345678
D+ D0 D10
K123456
D *
D0
(S)
(D)
K12 D0
*
(D)
(S2)
(S1)
D4
D0 K50
*
D0
2 steps worth
D1
D10
2 steps worth
D10
2 steps worth