Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

7 Examples of Practical Programs

Comm

on I
te

ms

FX

3U

-4AD

FX

3UC

-4

A

D

FX

3U

-4A
D

-A

D

P

FX

3G

-2A
D

-BD

FX

3U

-4DA

FX

3U

-4D
A

-AD
P

FX

3G

-1D
A

-BD

FX

3U

-3

A-

ADP

FX

3U

-4

A

D

-P

T

       
         

   -

A

D

P

FX

3U

-4A
D

-P

TW

     
        

      -
A

D

P

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-4AD/FX

3UC

-4AD (4-channel Analog Input)

This section describes a program that uses the 4AD convenient functions (BFM #22).

The sequence program described in this section is created under the following conditions.
1) System configuration

The FX

3U

-4AD (unit No.0) should be connected to the FX

3U

 Series PLC.

2) Input mode

Channels 1 and 2 should be set to mode 0 (voltage input, -10V to +10V 

→ -32000 to +32000).

Channels 3 and 4 should be set to mode 3 (current input, 4mA to 20mA 

→ 0 to 16000).

3) Averaging time

For all the channels, the averaging time should be set to "1" (default).
(To use the default value, it is not necessary to set the averaging time in the sequence program.)

4) Digital filter function

For all channels, the digital filter function should be disabled (default).
(To use the default value, it is not necessary to set the digital filter function in the sequence program.)

5) Convenient functions

The upper/lower limit detection function, upper/lower limit error status data automatic transfer function,
over-scale status data automatic transfer function, and error status data automatic transfer function
should be used.

6) Device assignment

Input

X000

Clearance of upper/lower limit error data

X001

Clearance of over-scale data

Output

Y000

Output of channel-1 lower limit error data

Y001

Output of channel-1 upper limit error data

Y002

Output of channel-2 lower limit error data

Y003

Output of channel-2 upper limit error data

Y004

Output of channel-3 lower limit error data

Y005

Output of channel-3 upper limit error data

Y006

Output of channel-4 lower limit error data

Y007

Output of channel-4 upper limit error data

Y010

Output of channel-1 over-scale (lower limit) data

Y011

Output of channel-1 over-scale (upper limit) data

Y012

Output of channel-2 over-scale (lower limit) data

Y013

Output of channel-2 over-scale (upper limit) data

Y014

Output of channel-3 over-scale (lower limit) data

Y015

Output of channel-3 over-scale (upper limit) data

Y016

Output of channel-4 over-scale (lower limit) data

Y017

Output of channel-4 over-scale (upper limit) data

Y20

Output of error detection signal

Y21

Output of setting error detection signal

D0

A/D converted digital value of channel 1

D1

A/D converted digital value of channel 2

D2

A/D converted digital value of channel 3

D3

A/D converted digital value of channel 4

D100

Upper/lower limit error status data automatic transfer-to data register

D101

Over-scale status data automatic transfer-to data register

D102

Error status data automatic transfer-to data register