Mitsubishi Electronics Mitsubishi Digital Electronics Home Theater Server MELSEC-F ユーザーズマニュアル

6 Troubleshooting

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-4AD-ADP (4-channel analog Input)

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

This chapter describes troubleshooting methods and error statuses.
If the A/D conversion data is not input, or if the proper digital value is not input, check the following items:
• PLC version number
• Wiring
• Special devices
• Programs
• Error status

• Any versions (from Ver.2.20 (initial version) to the latest version) of the FX

3U

 Series are compatible.

• Check the version number of the FX

3UC

 Series PLC. The version number should be 1.20 or later.

• Any versions (from Ver.1.00 (initial version) to the latest version) of the FX

3G

 Series are compatible.

→ For a detailed description of the version number check method, refer to Section 1.3.

Check the following items for wiring:

The 4AD-ADP needs driving power. Verify that the power supply line is properly connected. Also check that
the POWER indicator lamp of the 4AD-ADP is on.

Use 2-core twisted shielded pair cable for the analog input line. In addition, be sure to separate the analog
input line from other power lines or inductive lines.

To use the current input mode for a channel, be sure to shortcircuit the line between the V + terminal and the
I + terminal (  : channel number) of the channel. If the line is not shortcircuited, data will not be converted
into correct digital data.

→ For a detailed description of wiring, refer to Chapter 3.