Troubleshooting - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -4DA-ADP (4-channel analog Output)
3U
6.

Troubleshooting

This chapter describes the troubleshooting methods and error status.
If analog data is not output, or if the proper analog value is not output, check the following items:
• Version number of PLC
• Wiring
• Special devices
• Programs
• Error status
6.1 PLC Version Number Check
• Any versions (from Ver.2.20 (initial version) to the latest version) of the FX
• Check the version number of FX
• Any versions (from Ver.1.00 (initial version) to the latest version) of the FX
6.2 Wiring Check
Check the following items for wiring:
1. Power
The 4DA-ADP needs driving power. Verify that the power supply line is properly connected. Also check that
the POWER indicator lamp of the 4DA-ADP is on.
2. Analog output line
Use the 2-core twisted shielded pair cable for the analog output line. In addition, be sure to separate the
analog output line from other power lines or inductive lines.
6.3 Special Device Check
Check whether the special devices for the 4DA-ADP are being used correctly:
1. Output mode switching
Verify that the special device for switching the output mode is correctly set.
Turn off the device to set the output mode to the voltage output mode. Turn on the device to set the output
mode to the current output mode.
2. Output setting data
Check that the special device of the selected channel is correctly selected. This special device should be
selected depending on the connected position and the channel.
3. Error status
Check that no error is detected in the 4DA-ADP.
If an error is detected, check the details of the error, and then check the wiring and programs.
F-26
Series. The version number should be 1.20 or later.
3UC
→ For a detailed description of the version number check method, refer to Section 1.3.
→ For a detailed description of special devices, refer to Chapter 4.
→ For a detailed description of wiring, refer to Chapter 3.
6 Troubleshooting
6.1 PLC Version Number Check
Series are compatible.
3U
Series are compatible.
3G