Mitsubishi FX1S Series

FX Series Programmable Controlers Applied Instructions 5
5-187
5.15.3 RD3A (FNC 176)
Operation:
This instruction reads the analog input value of the
FX
0N-3A or FX2N-2AD block.
[M
1
] = Special block number, K0 to K7
[M
2
] = Analog input channel number, K1/K21 or K2/K22
[D] = Read data
Points to note:
Adjustment of the FX
0N-3A or FX2N-2AD analog block characteristics should be completed in advance of
using this instruction. For guidance please see the relevant manual.
For the FX
0N-3A, K1 = Channel 1, K2 = Channel 2. D = 0~255(8 bit)
For the FX
2N-2AD, K21 = Channel 1, K22 = Channel 2 D = 0~4095(12bit)
FX
1N series can only communicate with the FX0N-3A
Mnemonic Function
Operands
Program steps
M1 M2 D
RD3A
FNC 176
Read analog
block
Analog block read for
FX
0N-3A, FX2N-2AD
K,H.
KnX, KnY,KnM,KnS,
T,C,D,V,Z
KnY,
KnM,KnS
T.C,D,V,Z
RD3A
7steps
FX 1S FX 1N FX 2N
FX 2NC
PULSE-P 16 BIT OPERATION 32 BIT OPERATION
RD3A K0 K1 D0
[M
1][D][M2]
X000