Explanation Of Devices; Devices And Device Numbers; Device List - Mitsubishi Electric MELDAS C6 Programming Manual

5. Explanation of Devices

5.1 Devices and Device Numbers

The devices are address symbols to identify signals handled in PLC. The device numbers are serial
numbers assigned to the devices. The device numbers of devices X, Y, B, W, and H are represented
in hexadecimal notation. The device numbers of other devices are represented in decimal notation.

5.2 Device List

Device Device range
X* X0 to XAFF
Y* Y0 to YE7F
M M0 to M8191
L L0 to L255
F F0 to F127
SB SB0 to SB1FF
B B0 to B1FFF
SM* SM0 to SM127
V V0 to V255
SW SW0 to SW1FF
SD SD0 to SD127
T0 to T15
T16 to T95
T96 to T103
T104 to T143
T144 to T239
T
T240 to T255
T0000 to T0255
T1000 to T1255
T2000 to T2255
T3000 to T3255
C0 to C23
C24 to C127
C0000 to C0127
C
C1000 to C1127
C2000 to C2127
C3000 to C3127
D D0 to D8191
R* R0 to R8191
W W0 to W1FFF
Z Z0 to Z13
N N0 to N7
P0 to P255
P*
P360 to P379
K-32768 to K32767
K
K-2147483647 to
K2147483647
H0 to HFFFF
H
H0 to HFFFFFFFF
(Note 1) The applications of the devices having a * in the device column are separately determined.
Do not use the undefined device Nos., even if they are open.
(Note 2) The fixed timer and fixed counter cannot be changed with the numerical setting. Note that
those can be changed with the numerical setting when D or R device is specified.
(Note 3) The range of D0 to D8191 devices can be used on the software version D0 and higher.
5. Explanation of Devices
5.1 Devices and Device Numbers
Units
2816 points 1-bit
3712 points 1-bit
8192 points 1-bit
256 points 1-bit
128 points 1-bit
512 points 1-bit
8192 points 1-bit
128 points 1-bit
256 points 1-bit
512 points 16-bit
128 points 16-bit
16 points 1-bit/16-bit
80 points 1-bit/16-bit
8 points 1-bit/16-bit
40 points 1-bit/16-bit
96 points 1-bit/16-bit
16 points 1-bit/16-bit
256 points 1-bit
256 points 1-bit
256 points 16-bit
256 points 16-bit
24 points 1-bit/16-bit
104 points 1-bit/16-bit
128 points 1-bit
128 points 1-bit
128 points 16-bit
128 points 16-bit
8192 points 16-bit/32-bit Data register
(Note3)
8192 points 16-bit/32-bit File register. CNC word I/F
8192 points 16-bit/32-bit Link register
14 points 16-bit
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Details
Input signals to the PLC. Machine input, etc.
Output signals from the PLC. Machine output, etc.
For temporary memory
Latch relay (Backup memory)
For temporary memory. Alarm message interface
Special relay for links
Link relay
Special relay
Edge relay
Special register for links
Special register
10ms unit timer
100ms unit timer
100ms incremented timer
10ms unit timer (Fixed timers)
100ms unit timer (Fixed timers)
100ms incremented timer (Fixed timers)
T1: Timer coil
T0: Timer contact
TS: Timer setting value
TA: Timer current value
Counter
Counter (Fixed counters)
C1: Counter coil
C0: Counter contact
CS: Counter setting value
CA: Counter current value
Address index
Master control's nesting level
Conditional jump, subroutine call label
Decimal constant for 16-bit command
Decimal constant for 32-bit command
Hexadecimal constant for 16-bit command
Hexadecimal constant for 32-bit command