9
DEVICE EXPLANATION
9.1 Device List
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CHAPTER9 DEVICE EXPLANATION
This chapter describes all devices that can be used in the CPU module.
9.1 Device List
The names and data ranges of devices which can be used in the CPU module are shown
in Table9.1.
* 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.) (
Table9.1 Device List
Class
Type
Device Name
Default Values
Parameter
Designated
Setting Range
Reference
Section
Number of
Points
Range Used
Internal user
devices
Bit
devices
Input
6144 points
X0 to 17FF Hexadecimal
Changeable
within
12384 words.
*2
Output
6144 points
Y0 to 17FF Hexadecimal
Internal relay
6144 points
M0 to 6143
Decimal
Annunciator
1024 points
F0 to 1023
Decimal
Edge relay
1024 points
V0 to 1023
Decimal
Link relay
2048 points
B0 to 7FF
Hexadecimal
Special link relay
1536 points
SB0 to 5FF Hexadecimal
Word
devices
Timer
*1
512 points
T0 to 511
Decimal
Retentive timer
*1
0 points
--
Decimal
Counter
*1
512 points
C0 to 511
Decimal
Data register
6144 points
D0 to 6143
Decimal
Link register
2048 points
W0 to 7FF
Hexadecimal
Link special
register
1536 points
SW0 to 5FF Hexadecimal
Internal
system
devices
Bit
devices
Special relay
5120 points SM0 to 5119
Decimal
Unchangeable
Word
devices
Special register
5120 points
SD0 to 5119
Decimal
Nesting
--
Nesting
15 points
N0 to 14
Decimal
Unchangeable
Constants
--
Decimal constants
K-2147483648 to 2147483647
Hexadecimal
constants
H0 to FFFFFFFF
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