53
CJ1 and CJ1-H CPU Unit Comparison Section 1-6
I/O tables Detailed information
on I/O table creation
errors
Detailed I/O table error
information is stored in
A261 whenever the I/O
tables cannot be created
for any reason.
Detailed I/O table error
information is stored in
A261 whenever the I/O
tables cannot be created
for any reason.
Not supported.
Displaying presence
of first rack word set-
ting on Programming
Console
It’s possible to confirm if
the first rack word has
been specified for the sys-
tem on the Programming
Console display.
The first rack word is speci-
fied from the CX-Program-
mer, making it previously
impossible to confirm the
setting from the Program-
ming Console.
It’s possible to confirm if
the first rack word has
been specified for the sys-
tem on the Programming
Console display.
The first rack word is speci-
fied from the CX-Program-
mer, making it previously
impossible to confirm the
setting from the Program-
ming Console.
Not supported.
Sequence
instruc-
tions
Differentiated LD NOT,
AND NOT, and OR
NOT instructions
Supported. Supported. Not supported.
(The same results can be
achieved by combining dif-
ferentiated LD, AND, and
OR instructions with the
NOT instruction.)
OUTB, SETB, and
RSTB instructions to
manipulate individual
bits in DM and EM
Area words
Supported. Supported. Not supported.
Timer/
counter
instruc-
tions
Format for updating
PVs for TIM, TIMH,
TMHH, TTIM, TIML,
MTIM, CNT, CNTR,
CNR, TIMW, TMHW,
CNTW instructions
Either BCD or binary can
be selected (with CX-Pro-
grammer Ver. 3.0 or
higher).
Either BCD or binary can
be selected (with CX-Pro-
grammer Ver. 3.0 or
higher).
BCD only.
Special
math
instruc-
tions
32-bit signed data line
coordinates and X
axis starting point
specification for APR
instruction
Supported. Supported. Not supported.
Floating-
point deci-
mal
instruc-
tions
Single-precision cal-
culations and conver-
sions
Supported (enabling stan-
dard deviation calcula-
tions).
Supported (enabling stan-
dard deviation calcula-
tions).
Not supported.
Conversions between
single-precision float-
ing point and ASCII
Supported.
Floating point can be con-
verted to ASCII for display
on PTs.
ASCII text strings from
measurement devices can
be converted to floating-
point decimal for use in cal-
culations.
Supported.
Floating point can be con-
verted to ASCII for display
on PTs.
ASCII text strings from
measurement devices can
be converted to floating-
point decimal for use in cal-
culations.
Not supported.
Double-precision cal-
culations and conver-
sions
Supported (enabling high-
precision positioning).
Supported (enabling high-
precision positioning).
Not supported.
Item CJ1-H CPU Unit
(CJ1H-CPU6@H)
CJ1M CPU Unit
(CJ1M-CPU@2/CPU@3)
CJ1 CPU Unit
(CJ1G-CPU4@)
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