MITSUBISHI MELSEC device

MELSEC-Q series

device symbol

X (Input relay)
Y (Output relay)
DX (Direct input)
DY (Direct output)
M (Internal relay)
L (Ratch relay)
S (Step relay)
SM (Special relay)
B (Link relay)
F (Annunciator)
V (Edge relay)
TC (Timer coil)
TS (Timer contact)
SC (Totalizing timer coil)
SS (Totalizing timer contact)
CC (Counter coil)
CS (Counter contact)
SB (Link special relay)
D (Data register)
SD (Special register)
W (Link register)
TN (Current timer value)
SN (Current totalizing timer value)
CN (Current counter value)
R (File register)
ER (Extended file register)
ZR (Extende file register(serial nos.)
SW (Link special register)
Z (Index register)
BM (Random access buffer)
G (Buffer memory)
WR (Recieving register)
WW (Sending register)
D (Extended data register)
W (Extended link register)

Comment

An accessible range of the device depends on the setting of PLC.
MELSEC

Only accessible Ethernet unit

Only accessible CC-Link board
Only accessible CC-Link board

An accessible range of the device depends on the setting of PLC.

MELSEC-QnA/A/FX seriers

Device symbols

X (Input relay)
Y (Output relay)
M (Internal relay)
SM (Special rerlay)
B (Link relay)
F (Annunciator)
TC (Timer coil)
TS (Timer contact)
SC (Totalizing timer coil)
SS (Totalizing timer contact)
CC (Counter coil)
CS (Counter contact)
D (Data register)
SD (Special register)
W (Link register)
TN (Current timer value)
SN (Current totalizing timer value)
CN (Current counter value)
R (File register)
ER (Extended file register)
Z (Index register)
BM (Random access buffer)