Mitsubishi Electric MELSEC FX2N-4da User Manual

This manual containstext, diagrams and explanations which will guide the readerin the correct installation and
operation of the FX

2N-4DA special functionblock and should be read and understood before attemptingto install or use

the unit.
Further informationcan be found in the FX PROGRAMMING MANUAL, FX2N SERIES HARDWARE MANUAL .

• The FX2N-4DA analog specialfunction block has four output channels. The output channels takea digital value and

output an equivalentanalog signal. This is called a D/A conversion. The FX

2N-4DA has maximum resolutionof 12

bits.

• The selection of voltageor current based input/output is by user wiring. Analog rangesof -10 to 10V DC (resolution:

5mV), and/or 0 to 20mA(resolution: 20µA) maybe selected independently foreach channel.

• Data transfer betweenthe FX2N-4DA and the FX2N main unit is by buffer memory exchange. There are 32 buffer

memories (each of 16 bits)in the FX2N-4DA.

• The FX2N-4DA occupies 8 pointsof I/O on the FX2N expansion bus. The 8 points can be allocated from eitherinputs

or outputs. The FX2N-4DAdraws 30mA from the 5V rail of the FX2N main unit or powered extension unit.

● Weight : Approx. 0.3kg (0.66 lbs) ● Accessory: Special blocknumber label

Handling of crimp-styleterminal

• Be sure to use thecrimp-style terminals that satisfy the dimen-

sional requirementsshown in the left figure.

• Apply 0.5 to 0.8 N⋅m (5to 8 kgf⋅cm) torque to tighten the termi-

nals. Firmly tighten the terminalsto prevent abnormal operation.

POW ER

D/A

24V

FX2N -4DA

I+

V+

I+

VI-

CH4

CH3

CH2

CH1

V+

I+V+

I+

V+

24+

24-

VI-

VI-

VI-

8

9

1

4(0. 16)

2

55(2. 17)

90(3. 54)

87(3. 43)

55(2. 17)

80(3. 15)

9(0. 35)

7

6

5

4

3

4(0. 16)

CH1

V+

24+

24-

VI-

CONNECTION TO PROGRAMMABLE CONTROLLER

Various special blockscontrolled by the FROM/TO commands, such as the analog input blockshigh-speed counter
blocks, etc. can be connectedto the FX2N programmablecontroller (MPU), or connected to theright side of the other
extension blocks orunits. Up to eight specialblocks can be connected to a single MPU in the numeric orderof No. 0 to
No. 7.

WIRING: The terminal layout shown belowmay differ from the actual layout. For the correct terminallayout, refer to
section 2 External Dimensionsand Parts.

ENVIRONMENTAL SPECIFICATIONS

Item Specification

Environmental specifications(excluding following) Same as thosefor the FX

2N main unit

Dielectric withstandvoltage 500V AC, 1min (betweenall terminals and ground)

PERFORMANCE SPECIFICATIONS

Item Voltage output Currentoutput

Analog output range

-10V DC to +10V DC (Externalload
resistance: 2kΩ to 1MΩ).

DC 0mA to +20mA (Externalload resistance:
500Ω).

Digital input 16 bits, binary, withsign (Effective bits for numeric value: 11 bits and sign bit (1bit))

Resolution

5mV (10V × 1/2000) 20µA (20mA × 1/1000)

Total accuracy

±1% (at full scale of +10V) ±1% (at full scale of +20mA)

Conversion speed

2.1ms for 4 channels (Changein the number of channels used will not change theconversion
speed.)

Isolation

Photo-coupler isolationbetween analog and digital circuits.
DC/DC converter isolationof power from FX

2N main unit.

No isolation betweenanalog channels.

External power

supply

24V DC ±10% 200mA

Number of occupied

I/O points

8 points taken from theFX

2N expansion bus (can be either inputsor outputs)

Power consumption 5V, 30mA (Internal power supplyfrom MPU or powered extension unit)

I/O characteristics

(Default: mode 0)
Follow the procedure
described in section8

to change

At load resistance of10kΩ At load resistance of250Ω

At load resistance of250Ω

Command sent from the programmablecontroller can
change the mode. The voltage/currentoutput mode
selected will determinethe output terminals used.

Data is transmitted betweenthe FX2N-4DA and the MPU via buffer memories (16-bit 32-pointRAM).

Buffer memories marked“W” can be written to
using the T0 instructionin the MPU.

The status of BFM #0, #5,and #21, (marked E)
will be written to EEPROM,therefore the set
values will be retainedeven after turning off the
power.

➀ [BFM#0] Output mode select: The value of BFM #0 switches the analogoutput between voltage and current on

each channel. It takes the formof a 4 digit hexadecimal number. The first digit will be the command forchannel
1 (CH1), and the seconddigit for channel 2 (CH2) etc. The numeric values of these four digitsrespectively
represent the followingitems:

O = 0:Sets the voltageoutput mode (-10 V to +10 V).
O = 1:Sets the currentoutput mode (+4 mA to 20 mA).
O = 2:Sets the currentoutput mode (0 mA to +20 mA).

Switching the outputmode resets the I/O characteristics to the factory-set characteristics. Refer to the performance
specifications describedin section 4.

Example: H2110 CH1 : Voltage output (-10V to +10 V)

CH2 and CH3 : Current output (+4 mA to +20 mA)
CH4 : Currentoutput (0 mA to +20 mA)

➁ [BFM#1, #2, #3 and #4]: Output data channels CH1, CH2, CH3, and CH4

BFM #1: Output data ofCH1 (Initial value: 0) BFM #2: Output data ofCH2 (Initial value: 0)
BFM #3: Output data ofCH3 (Initial value: 0) BFM #4: Output data ofCH4 (Initial value: 0)

➂ [BFM#5]: Data holding mode: While the programmable controlleris in the STOP mode, the last output value in the

RUN mode will be held. To reset the value to the offset value, write the hexadecimalvalue in BFM #5 as follows:

O = 0: Holds the output.
O = 1: Resets to the offsetvalue.

Example: H0011 ⋅⋅⋅⋅⋅⋅ CH1 and CH2 = Offsetvalue CH3and CH4 = Output holding

In addition to theabove functions, the buffer memories can adjust the I/O characteristicsof the FX2N-4DA, and report
the status of the FX

2N-4DA to the programmablecontroller.

Buffer memories marked “W”can be written
to using the TO instructionin the MPU.
The status of BFM #0, #5, and#21, (marked
E) will be written toEEPROM, therefore the
set values will be retainedeven after turning
off the power.

*1:Offset data: Actualanalog output value

when correspondingoutput
data (BFM #1 through#4) is 0

*2:Gain data: Actualanalog output value

when correspondingoutput
data (BFM #1 through#4) is
+1,000

*3: When current outputmode 1 (+4 mA to

+20 mA) is set, the offsetdata will be
automatically set to+4,000 and the gain
data to +20,000. When the current
output mode 2 (0 mA to+20 mA) is set,
the offset data willbe automatically set
to 0 and the gain datato +20,000.

➃ [BFM#8 and #9] Offset/gain setting command: Changes offset and gainvalues of channels CH1 through CH4 by

writing 1 to the correspondingHex digits of BFM #8 or #9. The current values will be validuntil this command is
output.

BFM #8 BFM #9

O = 0: No changes done.
O = 1: Change data value.
(Program example : seesection 8.)

➄ [BFM#10 through #17] Offset/gain data: The offset and gainvalues are changed by writing new data to BFM #10

through #17. The units of thedata to be written is mV or µA. The data should be written and thenBFM #8 and #9
set. Note that the datavalue will be rounded down to the nearest 5mV or 20µA.

➅ [BFM#20] Initialize: When K1 is written in BFM #20, all valueswill be initialized to the factory-settings.

(Note that the BFM #20data will override the BFM #21 data.) This initialize functionis convenient if you have an
error in adjustment.

➆ [BFM#21] I/O characteristics adjustment inhibit: Setting BFM #21to 2 inhibits the user from inadvertent adjustment

of I/O characteristics. The adjustment inhibit function, once set, will be valid untilthe Permit command (BFM
#21=1) is set. The initialvalue is 1 (Permit). The set value will be retainedeven after power-off.

FX2N-4DA

JY992D65901A

2

➀ Extensioncable
➁ Power indicatorlamp (LED)

5 V power is suppliedfrom the programmable
controller to lightthis indicator lamp.

➂ Power supplyterminals

(Screw terminal: M3 (0.12))

➃ Analogoutput terminals

(Screw terminals : M3 (0.12))

➄ 24V power indicator lamp (LED)

24 VDC power is suppliedto the terminals of the
FX

2N-4DA to light this indicatorlamp.

➅ D/Aconversion indicator lamp (LED)

Flashes at a high speedif D/A conversion is
performing without aproblem.

➆ Hookfor DIN rail
➇ Groovefor DIN rail mounting

(Width of DIN rail : 35mm 1.38")

➈ Holefor direct mounting (2-φ4.5) (0.18)

*1: Use a twisted pair shielded cable for theanalog

output. This cable shouldbe wired away from power
lines or any other lineswhich could induce noise.

*2: Apply 1-point grounding at the load sideof the output

cable (class 3 grounding:100Ω or less).

*3: If electrical noise or a voltage rippleexists at the

output, connect a smoothingcapacitor of 0.1 to

0.47µF, 25V.

*4: Connect the terminal on the FX

2N-4DA with the

terminal on the MPU ofthe programmable

controller.

*5: Shorting the voltage output terminal orconnecting the

current output loadto the voltage output terminal
may damage the FX2N-4DA.

*6: The 24V DC service power of the programmable

controller can alsobe used.

*7: Do not connect any unit to the unused terminal

BFM Description

W

#0 E Output mode select. Factory setting H0000

#1

Output data (Signed16 bits binary: actual
value 11 bits + sign)
#1: CH1, #2: CH2, #3: CH3,#4: CH4

#2

#3

#4

#5 E Data holding mode. Factory setting H0000

#6, #7 Reserved

BFM Description

W

#8(E) Offset/gain setting commandCH1, CH2 Initial value H0000
#9(E) Offset/gain setting commandCH3, CH4 Initial value H0000
#10 Offset data CH1 *1

Unit: mV or µA
Initial offset value:0
Initial gain value:+5,000

#11 Gain data CH1 *2
#12 Offset data CH2 *1
#13 Gain data CH2 *2
#14 Offset data CH3 *1
#15 Gain data CH3 *2
#16 Offset data CH4 *1
#17 Gain data CH4 *2

#18, #19 Reserved

W

#20(E) Initialize. initial value = 0
#21 E I/Ocharacteristics adjustment inhibit (Initialvalue 1)

#22-#28 Reserved

#29 Error status
#30 K3020 identificationcode
#31 Reserved

1

3

4

5

Mode 1 (Current
output: +4mAto +20mA)

Mode 2 (Current
output: 0mAto +20mA)

6 .2mm

(0.24 inches )

or less

FOR M3(0. 12)

FX -16E X

X000 -X02 7
Y00 0-Y 027

X030

- X047

2N

FX -48M R- ES /UL

2N

FX -4AD

2N

No. 2

2N

FX -4AD -PT

X050 -X06 7
Y03 0-Y 047

2N

FX -32 ER

2N

FX -4DA

FX -4 8MR -E S /UL

2N

POWER

A/D
24V

FX

-4AD

2N

POWER

D/A
24V

FX -4DA

2N

No. 1

No. 0

POWER

24V
A/D

Spe cial bloc k

Spe cial bloc k

Spe cial bloc k

X0

X5

72 456130

1611 1514 1710 12 13

14 171510 12 13

72 456130

1611

OUT

IN

L

X11 X13 X15 X17

X6 X10 X12 X 14 X16

24+

N

COM X4

X7

COM4

COM2Y4Y5Y6Y7 COM3

Y10

Y11

Y12

Y13

COM1Y0Y1Y2Y3

Y14

Y15

Y16

Y17

X3X2X1

POWER

762720 222 3 24252621

1617

14 1 71510 1213

724561302 720 222 3 24252621

1611

IN

LX5X7

X13 X15 X17 X21 X23 X25

X4 X6 X10

X14 X16 X20 X22 X24

24+N

COM

X0X1X2

COM4

Y24

Y25

COM5

Y27COM2

Y4Y5Y6

Y7

COM3

Y10

Y13COM1

Y0 Y2

Y3

Y14

Y15

Y20

Y21

Y22

Y23

Y26

POWER

T.V

CPU.E

PROG.E

*6

DC2 4V±10 %200 mA

*4

Clas s 3
Grounding
(100

Ω

or les s)

PC

Exte nsion c able

24+

24-

FX -4DA

2N

DC/DC

converter

AG

+15V

+15V

CH1

CH2

V+

I +

VI -

V+

I +

VI -

*2

*5

*2

Mixed output from the sa me c hannel is not pos sible.

*1
*7

*3 Inverte r,etc.

Re corder, etc.

*1

Analog ou tput

Digital input

+10V

+10.235 V

-2,00 0
+2,000

-10V

-10.2 4V

-2,04 8

+2,047

Mode 0 (Voltage
output: -10Vto +10V)

Analog
output

+4mA

Digital input

+20mA

0

+1,000

Analog
output

Digital input

+20mA

0

+1,000

CH 4 C H3 CH 2 C H1

H

G2

H

O2 G 1

O1

CH 4 C H3 CH 2 C H1

H

G4

H

O4 G 3

O3

*3

Output

mode 0

资料提供　

思南工控

　　http://GKong.com

特殊功能模块

使用指南

引言

外部端子和部件

说明

安装与接线

缓存（ＢＦＭ）的分配

➇ [BFM #29]Error status: When an error occurs, use the FROM command toread out the details of the error.

Bit Name Status when bit is set to“1" (turned on)

Status when bit is setto ”0"

(turned off)

b0 Error Error if any of b1 throughb4 is turned on Noerror

b1 O/G error

Offset/gain data in EEPROMis abnormal or a
data setting error occurs.

Offset/Gain data normal

b2 Powersupply error 24V DC power failure Power supplied normally

b3 Hardware error DefectiveD/A converter or other hardware Non-detective hardware

b10 Range error

The digital inputor analog output value is out of
the specified range.

The input or outputvalue is in
the specified range.

b12

G/O-Adjustment

prohibit status

BFM #21 is not set to “1".

Adjustable status
(BFM #21 = 1)

Bits b4 through b9,b11, b13 through b15 are not defined.

➈ [BFM #30]Theidentification code for a special block is readusing the FROM command.The identification code for

the FX2N-4DA unit is K3020.TheMPU can use this facility in the program to identify thespecial block before
commencing any datatransfer from and to the special block.

Note : BFM #’s marked E/(E).

• Values of BFM #0, #5,and #21, (marked E) are stored in EEPROM memory of the FX2N-4DA.BFM #10 to #17 are

copied to EEPROM whenthe gain/offset setting command BFM #8, #9 is used. Also, BFM #20causes resetting of
the EEPROM memory. The EEPROMhas a life of about 10,000 cycles (changes), so do not useprograms which
frequently change theseBFMs.

• A mode change of BFM #0automatically involves a change of the corresponding offsetand gain values. Because

of the time needed towrite the new values to the internal EEPROM memory, a delay of3 s is required between in­structions changingBFM #0 and instructions writing to the corresponding BFM #10through BFM #17.

Therefore, a delay timer shouldbe used before writing to BFM #10 through #17.

If the factory-set I/O characteristicsare not changed and the status information isnot used, you can operate the
FX2N-4DA using the followingsimple program. For the FROM and TO commands, refer to the FX ProgrammingManual.

CH1 and CH2: Voltage outputmode (-10 V to +10 V)
CH3: Current output mode(+4 mA to +20 mA)
CH4: Current output mode(0 mA to +20 mA)

(H2100) → BFM #0
CH1 and CH2: Voltage output CH3: Current output (+4mA to

+20 mA) CH4: Current output(0 mA to +20 mA)
Write data in respectivedata registers while observing the

following ranges:
Data register D0 and D1:-2,000 to +2,000 Data registers D2 and
D3: 0 to +1,000

Data register D0 → BFM #1 (outputto CH1)
Data register D1 → BFM #2 (outputto CH2)
Data register D2 → BFM #3 (outputto CH3)
Data register D3 → BFM #4 (outputto CH4)

Operation procedure

➀ Turnoff the power of the MPU, and then connect the FX2N-4DA. After that, wire the I/O lines of the FX2N-4DA.
➁ Setthe MPU to STOP, and turn on the power. Write the above programthen switch the MPU to RUN.
➂ Analogvalues will be sent from D0 (BFM #1), D1 (BFM #2), D2 (BFM#3), and D3 (BFM #4) to the respective output

channels of the FX2N-4DA. When the MPU is in STOP, the analog values set before stoppingthe MPU will remain
output. (The outputwill be held.)

➃ Whenthe MPU is in STOP, the offset values can also be output. For a detailed description, refer to Section 5, ➂.

Program example

For the following program,CH1 and CH2 of the FX2N-4DA connected at special block positionNo. 1 are used as
voltage output channels, CH3as a current output channel (+4 mA to +20 mA), and CH4 asa current output channel (0
mA to +20 mA). When the MPU is in STOP, theoutput will be held. In addition, the status informationis used.

BFM #30 data (modelcode) of block No. 1 Transferred to data
register D4.

M1 will be turnedon when the model code is set to K3020
(FX2N-4DA).

H2100 → BFM #0 (unit No.1)
CH1 and CH2: Voltage output CH3: Current output (+4 mA to
+20 mA) CH4: Current output(0 mA to +20 mA)

D0 → BFM #1 (CH1 output)
D1 → BFM #2 (CH2 output)
D2 → BFM #3 (CH3 output)
D3 → BFM #4 (CH4 output)

BFM #29 (b15 to b0)→ (M25 to M10)
Reads out the status data.

Output data abnormal

➀ Check whether the output wiring and/or expansioncables are properly connected on FX

2N-4DA analog special

function block.

➁ Check that the FX2N system configuration rules have not been broken, i.e.the number of blocks does not exceed 8

and the total system I/Ois equal or less than 256 I/O.

➂ Ensure that the correct output mode has been selectedfor the application.
➃ Check that there is no power overload on either the5V or 24V power source, remember the loading on theFX2N

MPU or a powered extensionunit varies according to the number of extension blocksor special function blocks
connected.

➄ Put the main processing unit into RUN.
➅ After turning on or off the 24 VDC power for analogsignals, the analog output may fluctuate for approximately 1

second. This is due to time delaysin the power supply from the MPU or differences in start time. For this reason,
be sure to take preventivemeasures so that this output fluctuation will not affectthe external units.

[Example of preventivemeasure]

I/O characteristics

The standard characteristics(factory default) are shown by the solid lines in thefigure below. These characteristics can
be adjusted accordingto the conditions of the user’s system.

● . . . Gain value : Analog outputvalue when the digital input is +1,000
▲ . . . Offset value : Analog output valuewhen the digital input is 0

When the slope of theI/O characteristic line is steep: Slight changes to the digital input will greatly increaseor reduce

the analog output.

When the slope of theI/O characteristic line is gentle: Slightchanges to the digital input will not always changethe

analog output.

Note that the resolution(minimum possible change of analog output) of the FX

2N-4DA is fixed.

Adjustment of I/O Characteristics

To adjust the I/O characteristics,set the offset and gain of the FX

2N-4DA either using pushbutton switches connected

to input terminalsof the programmable controller or using the forced on/offfunction of a programming panel. To change
the offset and gain,just change the conversion constants of the FX

2N-4DA. Metering of the analogoutput is not needed

for adjustment, howevera program should be created in the MPU.
An example programfor adjustment is shown below. The example shows that for channelCH2 of FX2N-4DA block No.
1, the offset value ischanged to 7 mA, and the gain value to 20 mA. Note that for CH1, CH3, and CH4,the standard
voltage output characteristicsare set.

OPERATION START

(H0010)→BFM#0 Sets the
mode of the output channel.

(K1)→BFM#21
Permits adjustment of I/O
characteristics.

(K7000)→BFM#12
Sets the offset data. (Offsetvalue: 7 mA)

(K20000)→BFM#13
Sets the gain data. (Gainvalue: 20 mA)

(H1100)→BFM#8
CH2 offset/gain setting command

OPERATION END

(K2)→BFM#21
Inhibits adjustment ofI/O characteristics

Outline of FROM and TO commands:For a detailed description, refer to the FX ProgrammingManual.

m1 : Special unit or block number (K0to K7, numbered from the MPU)
m2 : Buffer memory head address (K0 to K31)

D• : Head device number of destinationdata. T, C, D, KnM, KnY, KnS, V, and Z can be used to designate the

head device. Each devicenumber can be qualified using an index.

n : Number of transfer points (K1 to K32) (K1 to K16 for 32-bitcommand)

m1,m2,n: Same as above

S• : Head device number of source data. T, C, D, KnX, KnM, KnY, KnS, V, Z, K, and H can be used to

designate the headdevice. Each device number can be qualified using an index.

• When X010 and X011are off, transfer will not be executed, therefore the destinationdata value will not be changed.

If the FX2N-4DA does not operateproperly, check the following items

➀ Checkthe external wiring. Refer to section 3 of this manual.
➁ Checkstatus of the POWER indicator lamp (LED) of the FX2N-4DA.

On :The extension cable is properly connected.
Off or flash : Check connection of extension cable. Also check the 5 V powersupply capacity.

➂ Checkstatus of the 24 V power indicator lamp (LED) of the FX2N-4DA.

On : 24 VDC is supplied.
Off : Supply 24 VDC (+10%)to the FX2N-4DA.

➃ Checkthe status of the D/A conversion indicator lamp (LED) of theFX2N-4DA.

Flash : D/A conversion is normal.
On or off : The ambient conditions are not suitablefor the FX2N-4DA, or the FX2N-4DA is defective.

➄ Checkthat the external load resistance connected to each analogoutput terminal does not exceed the capacity of

the FX2N-4DA drive (voltageoutput: 2kΩ to 1 MΩ / current output: 500Ω ).

➅ Checkthe output voltage or current value using a voltmeteror ammeter, and confirm that the output meets the I/O

characteristics. If the output does not meet the I/O characteristics, adjust theoffset and gain again. Refer to
section 8.

Note

To test the withstand voltageof the FX2N-4DA, connect all the terminals to the groundingterminal.

Guidelines for the safetyof the user and protection of the FX2N-4DA special function block

• This manual has been written tobe used by trained and competent personnel. This is definedby
the European directivesfor machinery, low voltage and EMC.

• If in doubt at any stage duringthe installation of the FX

2N-4DA always consult a professional

electrical engineerwho is qualified and trained to the local and nationalstandards. If in doubt
about the operationor use of the FX2N-4DA please consult the nearest MitsubishiElectric
distributor.

• Under no circumstances will MitsubishiElectric be liable or responsible for any consequential
damage that may ariseas a result of the installation or use of this equipment.

• All examples and diagrams shown inthis manual are intended only as an aid to understanding
the text, not to guaranteeoperation. Mitsubishi Electric will accept no responsibilityfor actual
use of the product basedon these illustrative examples.

HEAD OFFICE:MITSUBISHI DENKIBLDG MARUNOUCHI TOKYO 100 TELEX:J24532 CABLE MELCO TOKYO
HIMEJI WORKS:840, CHIYODACHO, HIMEJI, JAPAN

JY992D65901A

Effective JUN. 1997
Specifications aresubject to
change withoutnotice

FROM K1 K30 D4 K1

CMP K3020 D4 M0

TO K1 K0 H2100 K1

P

M1

TO K1 K1 D0 K4

Set the data to

M10 M20

No error

In specified
output range

M8000

RUN

monitor

D0 and D1 = -2,000 to +2,000
D2 and D3 = 0 to +1,000

FROM K1 K29 K4M10 K1

M3

M8002

initial pulse

TO K1 K0 H2100 K1

Write the data for CH1 to D0, CH2 to D1,
CH3 to D2 and CH4 to D3.

TO K1 K1 D0 K4

M8000

RUN

monitor

X010

SET M0

TO K1 K0 H0010 K1

P

TO K1 K21 K1 K1

P

M0

T0

TO K1 K12 K7000 K1

P

TO K1 K13 K20000 K1

P

TO K1 K8 H1100 K1

T0

T1

TO K0 K21 K2 K1

P

T1

RST M0

P

K30

K30

Standard characteristics

of voltage output

Standard characteristicsof current

output (+4mA to +20mA)

Standard characteristicsof current

output (0mA to +20mA)

6

7

8 9

24V DC power
supply

FX -4DA spec ial
function block

2N

Analog data cut
off circuit

E xterna l
analog unit

Power switch

Analog
output

Digital input

+10V

+10.235 V

-2,00 0
+2,000

-10V

-10.2 4V

-2,04 8

+2,047

+5V

o

u

t

p

u

t

mo

d

e

0

+1,000

Analog
output

+4mA

Digital input

+20mA

0

+1,000

O

u

tpu

t

m

ode

1

Analog
output

+20mA

0

Digital input

+1,000

Ou

tp

u

t

mo

d

e

2

After adjustment, the I/O
characteristics will be asfollows

Digital input

+1,000

A

nalog

o

utput

+7mA

+20mA

0

FNC 78

FROM

D P

X010

Read command

FROM K1 K30 D0 K1

Read BFM

BFM #30 of special unit No.1® D0

m1 m2

D×

n

FNC 79

TO

D P

X011

Write command

TO K1 K1 D2 K2

Write BFM

D2 and D3® BFM #1 and #2

of special unit No.1

m1 m2 n

S×

思南工控

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操作和编程示范

操作上的警示

Ｉ／Ｏ调节器的说明

故障排除