FX2N-2DA SPECIAL FUNCTIONBLOCK
USER’S GUIDE
JY992D74901C
This manual contains text, di agr ams and explanations which will guide the reader in the correct installation
and operation of the FX
2N
-2DA special function block and should be read and understood before
attempting to install or use the unit.
Further information can be found in the FX SERIES PROGRAMMING MANUAL,FX
2N
SERIES
HARDWARE MANUAL of each PLC.
1. INTRODUCTION
The FX2N-2DA type analog output block (Hereafter referred to as the FX2N-2DA) is used to convert a
digital value of 12 bits into an analog output of two points (voltage output and current output), and to
forward the values to the Programmable controller (Hereafter referred to as a PLC).
2N
FX
-2DA can be connected with FX0N, FX1N, FX2N, and the FX
2NC
series Programmable controllers.
1) The analog out put is selected from the voltage output or the current output by the method of
connecting wires.
At this time, assume setting to be two channels common analog output.
2) The two analog output channels can accept output of 0 to 10V DC, 0 to 5V DC, or 4 to 20mA.
(The mixture use for the voltage output/the current output is possible.)
3) Resolution is 2.5mV (0 to 10V DC) and 4µA(4 to 20mA).
4) The digital to analog conversion characteristics can be adjusted.
5) The block occupies 8 I/O points which can be allocated from either inputs or outputs.
6) The data transfer with the PLC uses the FROM/TO instruction.
2. EXTERNAL DIMENSIONS AND PARTS
Extension
DIN rail
mounting
slot
35mm(1.38)
9(0.35)
87(3.43)
cable
Mounting
holes
2holes4.5
(0.18)dia
4(0.16)
43(1.69)
90(3.54)
80(3.15)
Mass (Weight):0.2kg (0.44lbs) Accessories: Exchange number label
3. WIRING
VOUT
IO U T
COM
VOUT
IO U T
COM
*3
PLC
Extension
cable
DC/DC
converter
FX2N-2D A
+15V
AG
-15V
Dimensions: mm (inches)
M3(0.12)
terminal screws
OFF SET/GAIN
volume
Voltage output
Inve rter
*1
etc
*2
Current output
Recorder
etc
*3 Channel number enter
*1 Connect a 0.1 to 0.47µF 25V DC capacitor with the position of *1 when there is voltage
ripple in the voltage output or there will be a lot of noise.
*2 For voltage output please short circuit IOUT and COM as shown in the diagram.
4. CONNECTION WITH PROGRAMMABLE CONTROLLER
1) Up to 4 FX2N-2DA units can be connected to an FX0N series PLC, up to 5 for FX
up to 4 for an FX
2NC
series PLC, all with powered extension units.
1N,
up to 8 for FX2N or,
However the following limitation exists when undermentioned special function blocks are connected.
2N
: Main unit and powered extension units of 32 points I/O or less. Consumption current available for
FX
undermentioned special function blocks ≤ 190mA
2N
FX
: Main unit and powered extension units of I/O 48 points or more. Consumption current available
for undermentioned special function blocks ≤ 300mA
2NC
FX
: Up to 4 undermentioned special function blocks can be connected regardless of the system I/O.
0N/1N
:Main unit and powered extension units. Up to 2 undermentioned special function blocks can be
FX
connected regardless of the system I/O.
FX2N-2DA FX2N-2AD FX0N-3A
Consumption current of 24V DC for one unit 85mA 50mA 90mA
The consumption of the above units is to be subtracted from the service power supply of the host
PLC.
2) The blocks occupy 8 points (The 8 points can be allocated from either inputs or outputs).
2N
3) FX
4) The FX
-2DA consumes 5V DC 30mA.
The total of 5V consumption of all special function blocks connected to an FX
2N
an FX
extension unit must not exceed the 5V source capacity of the system.
2N
-2DA and main unit are connected by a cable on the right of the main unit.
FX
FX2N-32MR
X10 X14 X16
COM X4
X3X2X1
L X13 X15
24+N
X7
IN
OUT
Y4Y5Y6
Y10
Y12
COM3
Y11
Y13Y1Y2Y3
2N
72456130
FX -2DA
14 171510 1213
1611
1611 1514 1710 1213
Y14
Y15
2N
POWER
POWER
RUN
BATT.V
PROG.E
72456130
CPU.E
FX
-2DA
2N
IN 0
1
2
3
4
5
6
7
POWER
FX -2DA
2N
POWER
IN 0
1
2
3
4
5
6
7
-16EX
FX
2N
-2DA
FX
-32ER
2N
X0
X6 X0 X2 X4 X6
COM X4
L X1X3X5X7
X5
24+N
X3X2X1
2N
X7
IN
01234567
OUT
or FX
76543210
72456130
72456130
Y4Y5Y6
COM4COM2Y4Y5Y6Y7 COM3Y0Y1Y2Y3COM1Y0Y1Y2Y3
Y7
2NC
FX
2N
FX -2DA
POWER
main unit or
-2DA
2N
POWER
5. SPECIFICATIONS
5.1 Environment specificatio n
Item Content
Directric Withstand
voltage
Environmental specifications other than the above-mentioned are the same as the main unit of the
Programmable controller. (Refer to the manual of the Programmable controller)
5.2 Power supply specification and others
Item Content
Analog circuits
Digital circuits 5V DC 30mA (Internal power supplied from main unit)
Isolation
Number of occupied
I/O points
500V AC 1min(Between analog output terminals and case)
24V DC
10% 85mA (Internal power supplied from the main unit)
±
Photo-coupler isolation between analog and digital circuits.
DC/DC converter isolation of power from main unit.
(No isolation between analog channels.)
The blocks occupy either 8 input or output points.
(can be either inputs or outputs)
5.3 Defining gain and offset
Item Voltage output Current output
At shipping, the unit is adjusted to a digital range of 0 to 4000 for an analog
voltage output of 0 to 10V DC. When using FX
the 0 to 5V DC output, it is necessary to readjust by the offset and gain
Range of analog output
volumes.
0 to 10V DC, 0 to 5V DC
(External load resistance 2K to
1MΩ)
Digital input 12bit
Resolution 2.5mV(10V/4000) 1.25mV(5V/4000) 4µA {(20-4)/4000}
Integrated accuracy ±1% (full scale 0 to 10V) ±1% (full scale 4 to 20mA)
Processing time 4ms/1 channel (sequence program and synchronization)
Analogue value
Digital valu e
10V
:0 to 10V
:0 to 4000
10.238V
2N
-2DA by the current input or
4 to 20mA
(External load resistance 400Ω or
less)
Analogue value
Digital valu e
20mA
:4 to 20mA
:0 to 4000
20.380mA
output characteristics
Analogue
value
04000
Digital valu e
Offset value is fixation
4095
Analogue
value
4mA
04000
Digital valu e
Only subordinate position 12bit becomes effective when the data of 13bit or
more is input, and high rank bit any more is disregarded.
Use a digital value within the range from 0 to 4095.
The output characteristic can be set to each two channels.
6. ALLOCATION OF BUFFER MEMORY (BFM)
6.1 Buffer memory
BFM
number
#0 to #15 Reserved
#16 Reserved Current value of output data(8 bit)
#17 Reserved
#18 or more Reserved
BFM#16:The D/A conversion data of the channel specified with BFM#17 (digital value) is written.
BFM#17:b0•••The D/A conversion of CH2 begins by changing of 1→0.
b15 to b8 b7 to b3 b2 b1 b0
D/A subordinate
position data
holding
CH1 D/A
conversion
beginning
CH2 D/A
conversion
beginning
The D/A data is written in the binary in order of subordinate position 8bit and high rank
4bit,divided into two portions.
b1•••The D/A conversion of CH1 begins by changing of 1→0.
b2•••The subordinate position eight bit data for the D/A conversion is held by changing of 1→0.
4095
Write data in above-mentioned buffer memory by "8.Program example".
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