Mitsubishi Electric MELDAS C6 Programming Manual page 303

LDBIT, ANDBIT, ORBIT ... Bit test of "A" contact handling
Bit device
X Y M L F B SB T SM V T
S
n
< =
LDBIT
(Note)
ANDBIT
ORBIT
(Note) In programming with the MELSEC PLC development tool (GPPQ or GX Developer),
the comparison operation command mentioned above is subsutituted and used.
Function
(1) A bit test of the 16-bit device is executed with "A" contact handling.
(2) The bit test results are as shown below.
Condition
When test bit is 1
When test bit is 0
Execution conditions
The execution conditions for LDBIT, ANDBIT and ORBIT are as shown below.
Condition
LDBIT Executed per scan
ANDBIT Executed only when previous
contact command is ON
ORBIT Executed per scan
Cautions
Other than a constant cannot use for n. When other than a constant is used for n, it operates as LD<=,
AND<=, and an OR<= command.
8. Function Commands
LDBIT, ANDBIT, ORBIT
Usable device
Word device
C D R W SW Z SD K
n
S1
< = S1 n
(Note)
n
S1
< =
(Note)
Bit test results
Continuity
Non-continuity
Execution conditions
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Digit
Con-
Pointer desig- Index
stant
nation
H P
(Note) (Note)
Setting data
No. of device to
S1
execute bit test.
Bit to execute bit
n
test.
No. of
steps
2