Mitsubishi Electric MELSEC iQ-R Series - Chapter 27 Devices; Device List

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27 DEVICES
27.1 Device List
27 DEVICES
This chapter describes the devices.
27.1 Device List
This section lists the devices.
Classification Type Device name Symbol Number of points
of Default
Parameter-set range Notation
User device Bit Input X 12K points Unchangeable Hexadecimal
Bit Output Y 12K points Hexadecimal
Bit Internal relay M 12K points Changeable ( Page
450 Device Setting)
Decimal
Bit Link relay B 8K points Hexadecimal
Bit Annunciator F 2K points Decimal
Bit Link special relay SB 2K points Hexadecimal
Bit Edge relay V 2K points Decimal
Bit Step relay
*3
S 0 points Decimal
Bit/word Timer T 1K points Decimal
Bit/word Retentive timer ST 0 points Decimal
Bit/double word Long timer LT 1K points Decimal
Bit/double word Long retentive timer LST 0 points Decimal
Bit/word Counter C 512 points Decimal
Bit/double word Long counter LC 512 points Decimal
Word Data register D 18K points Decimal
Word Link register W 8K points Hexadecimal
Word Link special register SW 2K points Hexadecimal
Bit Latch relay L 8K points Decimal
System Device Bit Function input FX 16 points Unchangeable Hexadecimal
Bit Function output FY 16 points Hexadecimal
Word Function register FD 5 points  4 words Decimal
Bit Special relay SM 4K points Decimal
Word Special register SD 4K points Decimal
Link Direct Device Bit Link input Jn\X 160K points
(Max.)
*1*5
Unchangeable Hexadecimal
Bit Link output Jn\Y 160K points
(Max.)
*1*5
Hexadecimal
Bit Link relay Jn\B 640K points
(Max.)
*1*5
Hexadecimal
Bit Link special relay Jn\SB 5120 points
(Max.)
*1*5
Hexadecimal
Word Link register Jn\W 2560K points
(Max.)
*1*5
Hexadecimal
Word Link special register Jn\SW 5120 points
(Max.)
*1*5
Hexadecimal
Module access
device
Word Module access device Un\G 268435456 points
(Max.)
*1
Unchangeable Decimal
CPU buffer
memory access
device
Word CPU buffer memory access
device
U3En\G 268435456 points
(Max.)
*1
Unchangeable Decimal
U3En\HG 12288 points
maximum
Changeable Decimal
Index register Word Index register Z 20 points Changeable ( Page
477 Index register
setting)
Decimal
Double word Long index register LZ 2 points Decimal
File register Word File register R/ZR 0 points Changeable Decimal