Troubleshooting - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -4DA (4-channel Analog Output)
3U
9.

Troubleshooting

This chapter describes the troubleshooting methods and error codes.
If the D/A conversion data is not output, or if the proper digital value is not output, check the following items:
• Wiring
• Program
• Error status
9.1 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
9.2 Wiring Check
Check the wiring as follows:
1. Power
FX -4DA needs driving power. Verify that the power supply line is properly connected. Also check that the
3U
24 V indicator lamp of FX
2. Analog output line
Use the 2-core twisted shielded cable for the analog output line. In addition, be sure to separate the analog
output line from the other motive power lines or inductive lines.
9.3 Program Check
Check the program as follows:
1. Check the output mode and output data.
Check that data has been set correctly in BFM #0 to #4.
2. Check the settings.
Check that the offset data (BFM #10 to #13), gain data (BFM #14 to #17), upper/lower limit function setting
(BFM #38) and table output function start/stop setting (BFM #80) are correct.
E-64
Series. The version number should be 1.30 or later.
3UC
→ For a detailed description of the version number check method, refer to Section 1.3.
-4DA is on.
3U
→ For a detailed description of wiring, refer to Chapter 3.
9 Troubleshooting
9.1 PLC Version Number Check
Series are compatible.
3U
Series are compatible.
3G