10
DEVICE EXPLANATION
10.1 Device List
10 - 2
9
Parameters
10
Device Explanation
11
CPU Module Processing
Time
12
Procedure for Writing
Program to CPU ModuleAppendicesIndex
* 1 : For the timers, retentive timers and counters, their contacts and coils are bit devices and their
current values are word devices.
* 2 : Can be changed in the PLC parameter dialog box of GX Developer. (Except the input, output, step
relay, link special relay and link special register.) ( Section 10.2)
* 3 : The number of actually usable points changes depending on the intelligent function module. For
the number of buffer memory points, refer to the manual of the intelligent function module used.
* 4 : The character string is available for only the $MOV, STR, DSTR, VAL, DVAL, ESTR and EVAL
instructions.
It is unavailable for the other instructions.
Table10.1 Device List (Continued)
Class Type Device Name
Default Values Parameter
Designated
Setting Range
Reference
Section
Number of
Points
Range Used
File
register
Word
device
File
register
Q00JCPU 0 -- --
Unchangeable Section 10.7
Q00CPU,
Q01CPU
64k
R0 to 32767
ZR0 to 65535
Decimal
Nesting -- Nesting 15 N0 to 14 Decimal Unchangeable Section 10.9
Pointers --
Pointer 300 P0 to 299 Decimal
Unchangeable
Section 10.10
Interrupt pointer 128 I0 to 127 Decimal Section 10.11
Other
Bit
device
SFC block device 128 BL0 to 127 Decimal Unchangeable
Section
10.12.1
--
Network No.
designation device
239 J1 to 239 Decimal
Unchangeable
Section
10.12.3
I/O No.
designa-
tion
device
Q00JCPU -- U0 to F Hexadecimal
Section
10.12.4
Q00CPU,
Q01CPU
-- U0 to 3F Hexadecimal
--
Macro instruction
argument device
--
VD0 to
Decimal Unchangeable
Section
10.12.5
Constants --
Decimal constants K-2147483648 to 2147483647
Section
10.13.1
Hexadecimal
constants
H0 to FFFFFFFF
Section
10.13.2
Real number
constant
E 1.17550 - 38 to E 3.40282 + 38
Section
10.13.3
Character string
constants
"ABC" and "123"
*4
Section
10.13.4
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