Mitsubishi Electronics MELSEC-F

/FX

3UC

PLC User's Manual - Analog Control Edition

Table of Contents

FX3U-4DA (4-channel Analog Output)

1. Outline E-3

1.1 Outline of Functions.....................................................................................................................E-3

1.2 Setup Procedure Before Starting Operation................................................................................E-4

1.3 Connectable PLCs and Version Numbers...................................................................................E-5

1.4 Compatible Programming Tool Version Number.........................................................................E-5

2. Specifications E-6

2.1 Generic Specifications.................................................................................................................E-6

2.2 Power Supply Specifications........................................................................................................E-7

2.3 Performance Specifications.........................................................................................................E-7

2.4 Output Mode (Characteristics) BFM #0........................................................................................E-8

3. Wiring E-9

3.1 Terminal Layout.........................................................................................................................E-10

3.2 Cable and Terminal Tightening Torque......................................................................................E-10

3.3 Wiring to Power Supply Terminals.............................................................................................E-11

3.3.1 Examples of Power Supply Circuit.............................................................................................E-11

3.3.2 Cautions regarding wiring to the power supply terminals...........................................................E-11

3.4 Analog Output Wiring.................................................................................................................E-12

3.5 Grounding..................................................................................................................................E-12

4. Analog Output E-13

4.1 Analog Output Procedures.........................................................................................................E-13

5. Buffer Memory (BFM) E-15

5.1 Assignment of Unit Numbers and Outline of Buffer Memory.....................................................E-15

5.2 Buffer Memory Reading/Writing Method....................................................................................E-16

5.2.1 Buffer memory direct specification (FX3U, FX3UC PLC only).....................................................E-17

5.2.2 FROM/TO instruction (FX3G, FX3U, FX3UC PLC)......................................................................E-17

5.3 Buffer Memory List (BFM)..........................................................................................................E-18

5.4 Buffer Memory Details................................................................................................................E-21

5.4.1 BFM #0: Output mode specification...........................................................................................E-21

5.4.2 BFM #1 to #4: Output data.........................................................................................................E-22

5.4.3 BFM #5: Output setting upon PLC stop......................................................................................E-22

5.4.4 BFM #6: Output status................................................................................................................E-23

5.4.5 BFM #9: Offset/gain setting value write command.....................................................................E-24

5.4.6 BFM #10 to #13: Offset data/BFM #14 to #17: Gain data..........................................................E-25

5.4.7 BFM #19: Data change prohibition of setting change.................................................................E-26

5.4.8 BFM #20: Initialization function (resetting to factory default status)...........................................E-27

5.4.9 BFM #28: Disconnection detection status (only in current output mode)...................................E-27

5.4.10 BFM #29: Error status..............................................................................................................E-28

5.4.11 BFM #30: Model code..............................................................................................................E-29

5.4.12 BFM #32 to #35: Data to be output upon PLC stop..................................................................E-29

5.4.13 BFM #38: Upper/lower limit function setting.............................................................................E-30

5.4.14 BFM #39: Upper/lower limit function status..............................................................................E-31

5.4.15 BFM #40: Clearance of upper/lower limit function status.........................................................E-31

5.4.16 BFM #41 to #44: Lower limit values of upper/lower limit function

BFM #45 to #48: Upper limit values of upper/lower limit function..........................................E-32