Fnc176 - Rd3A / Read Form Dedicated Analog Block - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
22.3 FNC176 – RD3A / Read form Dedicated Analog Block
Outline
This instruction reads an analog input value from the analog block FX
1. Instruction format
FNC 176
RD3A
2. Set data
Operand Type
m1
m2
D
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS
m1
m2
D
Explanation of function and operation
1. 16-bit operation (RD3A)
Command
input
FNC176
RD3A
m1 : Special block number
FX
3G
FX
3UC
m2 : Analog input channel number
FX
0N
FX
2N
: Read data
D
A value read from the analog block is stored.
FX
0N
FX
2N
*1. The FX
0N
584
Mnemonic
16-bit Instruction
P
RD3A
7 steps
RD3AP
Special block number
- FX /FX /FX (D, DS, DSS) PLC: K0 to K7
3G 3U 3UC
- FX -32MT-LT(-2) : K1 to K7
3UC
Analog input channel number
Word device storing the read data
Digit Specification
m1 m2
/FX /FX (D, DS, DSS) PLC : K0 to K7
3U 3UC
-32MT-LT(-2) : K1 to K7 (K0 indicates the built-in CC-Link/LT master.)
*1
-3A : K1 (ch 1) or K2 (ch 2)
-2AD : K21 (ch 1) or K22 (ch 2)
*1
-3A : 0 to 255 (8 bits)
-2AD : 0 to 4095 (12 bits)
-3A is available only for the FX
22.3 FNC176 – RD3A / Read form Dedicated Analog Block
-3A
0N
Operation Condition
32-bit Instruction
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
T C D R U \G
D
and FX PLCs.
3U 3UC
22 External Device – FNC170 to FNC179
*1
or FX -2AD.
2N
Mnemonic Operation Condition
−
Others
Con- Real
Index
stant Number
V Z Modify K H E
Data Type
16-bit binary
16-bit binary
16-bit binary
Charac-
Pointer
ter String
" " P