Mitsubishi Electric MELSEC IQ-R series Reference Manual page 354

Accessible device range
The following table shows the devices and device number range that can be specified when accessing the device memory.
Access the CPU module within the range of device number that can be used by commands and the range of the device
number that can be used in the access target CPU. (Page 350 Considerations when accessing devices other than ACPU
module)
: Specify 0 (30H) or space (20H)
Device
Device name
Input
Output
Internal relay
Latch relay
Step relay
Annunciator
Link relay
Timer Current value
Contact
Coil
Counter Current value
Contact
Coil
Data register
Link register
File register
Special relay
Special register
• Do not write data to the devices which cannot be written in the range of the special relays (M9000 to M9255)
and special registers (D9000 to D9255). For details on the special relays and special registers, refer to
manual of ACPU to be accessed.
• The range of M, L, and S devices can be specified for MELSEC-A series CPU module, however, if the range
of M is specified by L or S or vice versa, they are processed equivalently.
• For word unit specification, the head device number of bit device must be specified in multiple of 16.
• For special relay M9000 or later, (9000 + multiple of 16) can be specified.
17 COMMUNICATING USING 1C FRAMES
352
17.4 Device Memory Read and Write
Symbol Type Represent
ation
X Bit Hexadecimal
Y Bit Hexadecimal
M Bit Decimal
L Bit Decimal
S Bit Decimal
F Bit Decimal
B Bit Hexadecimal
T Word Decimal
Bit Decimal
Bit Decimal
C Word Decimal
Bit Decimal
Bit Decimal
D Word Decimal
W Word Hexadecimal
R Word Decimal
M Bit Decimal
D Word Decimal
Device code Device number
ACPU common
command
X 0 to 7FF
Y 0 to 7FF
M 0 to 2047
L 0 to 2047
S 0 to 2047
F 0 to 255
B 0 to 3FF
TN 0 to 255
TS
TC
CN 0 to 255
CS
CC
D 0 to 1023
W 0 to 3FF
R 0 to 8191
M 9000 to 9255
D 9000 to 9255
AnA/AnUCPU common
command
0 to 1FFF
0 to 1FFF
0 to 8191
0 to 8191
0 to 8191
0 to 2047
0 to 1FFF
0 to 2047
0 to 1023
0 to 8191
0 to 1FFF
0 to 8191
9000 to 9255
9000 to 9255