9
DEVICE EXPLANATION
9.1 Device List
9
- 2
9
Device Explanation
10
CPU Module Processing
Time
11
Procedure for Writing
Program to CPU Module
AppendicesIndex
* 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 9.2)
* 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.
File register
Word
device
File
register
Q00JCPU 0 points --
Unchangeable Section 9.7
Q00CPU,
Q01CPU
64k points
R0 to 32767
ZR0 to 65535
Nesting -- Nesting 15 points N0 to 14 Unchangeable Section 9.8
Pointers --
Pointer 300 points P0 to 299
Unchangeable
Section 9.9
Interrupt pointer 128 points I0 to 127 Section 9.10
Other
Bit
device
SFC block device 128 points BL0 to 127 Unchangeable Section 9.11.1
--
Network No.
designation device
239 points J1 to 239
Unchangeable
Section 9.11.3
I/O No.
designa-
tion device
Q00JCPU -- U0 to F
Section 9.11.4
Q00CPU,
Q01CPU
-- U0 to 3F
--
Macro instruction
argument device
--
VD0 to
Unchangeable Section 9.11.5
Constants --
Decimal constants K-2147483648 to 2147483647 Section 9.12.1
Hexadecimal constants H0 to FFFFFFFF Section 9.12.2
Real number constant
E 1.17550 - 38 to E 3.40282 + 38
Section 9.12.3
Character string
constants
"ABC" and "123"
*4
Section 9.12.4
Table9.1 Device List(Continued)
Class Type Device Name
Default Values
Parameter
Designated
Setting Range
Reference
Section
Number of
Points
* 2
Range Used
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