Mitsubishi Electric FX3G User Manual page 230

FX /FX /FX /FX /FX
3S 3G 3GC 3U
FX -4DA (4-channel Analog Output)
3U
2. Outline of buffer memory
The digital values set in FX
To switch the output mode between voltage output and current output, or to adjust the offset or gain, numeric
data will be sent from the main unit and written/set in the FX
To read/write data from/into the buffer memory of FX
using FROM/TO instructions or an applied instruction. Using this function, sequence programs can be easily
created.
Main unit
Sequence
program
*1. Since buffer memory direct specification (U\G) can directly specify the buffer memory in the
source or destination area of an applied instruction, programs can be created efficiently. (This function
is supported only in FX
E-16
PLC User's Manual - Analog Control Edition
3UC
-4DA will be converted to analog signals.
3U

BFM direct
*1
specification

TO instruction

BFM direct
*1
specification

FROM
instruction
/FX
3U 3UC
→ For a detailed description of buffer memory reading/writing, refer to Section 5.2.
→ For a detailed description of the buffer memory, refer to Section 5.4.
-4DA buffer memory.
3U
-4DA, the buffer memory can be directly specified
3U

BFM direct
FX -4DA
3U
specification

TO instruction

BFM direct
specification

FROM instruction
Buffer
memory
Digital
value
D/A
conversion
Analog data
Inverter, DC motor, etc.
PLCs.)
5 Buffer Memory (BFM)
5.1 Assignment of Unit Numbers and Outline of Buffer Memory
FX -4DA
3U
*1
Buffer
memory
*1
Digital
value
D/A
conversion
Analog data