Mitsubishi Electric MELSEC Q Series Programming Manual page 23

2 SYSTEM CONFIGURATION
(2) Applicable devices
Internal user device
Internal system device
Link direct device
Intelligent function module
device
Index register
File register
Constant
Others
*1: Z0 and Z1 cannot be used.
2 - 2
The device names that can be used in ST programs are as indicated below. The
number of device points can be changed in parameter setting.
Refer to Section "3.3.3 Devices" for details of the device representation methods.
Classification
Bit
Word
Bit
Word
Bit
Word
Word
Word
Word
Bit/word/dou
ble word
Real number
Character
string
Bit
Bit
Bit
Bit
Bit
For Universal model QCPU/LCPU, Z16 to Z19 cannot be used.
Type Device
Input
Output
Internal relay
Latch relay
Annunciator
Link relay
Link special relay
Data register
Link register
Link special register
Special relay
Special register
Link input
Link output
Link relay
Link special relay
Link register
Link special register
Intelligent function module
device
Index register
File register
Decimal constant
Hexadecimal constant
Real number constant
Character string constant
SFC block device
SFC transition device
SFC step relay
Direct input
Direct output
2
Representation
X
Y
M
L
F
B
SB
D
W
SW
SM
SD
Jn\X
Jn\Y
Jn\B
Jn\SB
Jn\W
Jn\SW
Un\G
*1
Z
R
ZR
K
H
E
"ABC", etc.
BL
BL\TR
BL\S
DX
DY
2- 2