File Registers - Mitsubishi Electric FX2N Beginners Manual

Registers
Registers with externally modifiable contents
The controllers of the FX
ometers with which you can adjust the contents of special registers D8030 and D8031 in the
range from 0 to 255 (see section 4.6.1). These potentiometers can be used for a variety of pur-
poses – for example to adjust setpoint values for timers and counters without having to connect
a programming unit to the controller.
4.5.3

File registers

The contents of file registers are also not lost when the power supply is switched off. File regis-
ters can thus be used for storing values that you need to transfer to data registers when the
PLC is switched on, so that they can be used by the program for calculations, comparisons or
as setpoints for timers.
File registers have the same structure as data registers. In fact, they are data registers – they
consist of blocks of 500 addresses each in the range from D1000 to D7999.
Device
Device identifier
Device type (for setting and polling)
Possible device values
Device address format
Number of devices and
addresses
For a detailed description of the file registers see the Programming Manual for the MELSEC
FX family.
4 – 14
, FX , FX , FX and FX
1S 1N 3G
3GE
File registers
D
Word device (two registers can be combined to store double-word
values)
16 bit register: 0000
32 bit register: 00000000
Decimal
1500 (D1000–D2499)
FX
1S
A maximum of 3 blocks of 500 file registers each can be defined in
the PLC parameters.
FX
1N
FX
2N
7000 (D1000–D7999)
FX
2NC
A maximum of 14 blocks of 500 file registers each can be defined in
FX
3G
the PLC parameters.
FX
3GC
FX
3GE
2000 (D1000–D2999)
FX
3S
A maximum of 4 blocks of 500 file registers each can be defined in
the PLC parameters.
7000 (D1000–D7999)
FX
3U
A maximum of 14 blocks of 500 file registers each can be defined in
FX
3UC
the PLC parameters.
series have two integrated potenti-
3S
to FFFF (-32768 to 32767)
H H
to FFFFFFFF (-2 147 483 648 to
H H
2 147 483 647)
MITSUBISHI ELECTRIC
Devices in Detail