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FX Series Programmable Controllers Devices in Detail 4
4-30
4.12 Data Registers
Device Mnemonic: D
Purpose: A storage device capable of storing numeric data or 16/32bit patterns
Alias: Data (register/ device/ word)
D (register)
D
Word
Available forms: General use registers - see page 4-34
Battery backed/latched registers - see page 4-35
Special diagnostic registers - see page 4-35
File registers - see page 4-36
RAM file registers - see page 4-36
Externally adjusted registers - see page 4-37
Devices numbered in: Decimal, i.e. D0 to D9, D10 to D19
Further uses: Can be used in the indirect setting of counters and timers
Example device usage: None
Available devices:
R - These devices are allocated by the user at the expense of available program steps.
On FX
2N and FX2NC these devices are a subset of the latched registers.
F - These devices are also included under the count for diagnostic registers.
FX1S FX1N FX2N FX2NC
General use
registers
128
(D0 - 127)
128
(D0 - 127)
200
(D0 - 199)
200
(D0 - 199)
Latched
registers
128
(D128 - 255)
7872
(D128 - 7999)
7800
(D200 - 7999)
7800
(D200 - 7999)
Diagnostic
registers
256
(D8000 - 8255)
256
(D8000 - 8255)
256
(D8000 - 8255)
256
(D8000 - 8255)
File registers R N/A
7000
(D1000 - 7999)
7000
(D1000 - 7999)
7000
(D1000 - 7999)
Adjustable
registers F
2
(D8030 - 8031)
2
(D8030 - 8031)
N/A N/A