Alarm codeAL.8E
Serial communication error occurs from faulty cables (open/short), or a malfunctioning communication device like a PC. The manual's first action is: “Power OFF→ON”
- Model
- Mitsubishi Electric MR-J2S-A
- Display shows
- Serial communication error (AL.8E)
- Type
- Alarm code
- Source
- Manual p. 69
What AL.8E means
Serial communication error p. 200
Common causes
- 1. Communication cable fault (Open cable or short circuit) p. 200
- 2. Communication device (e.g. personal computer) faulty p. 200
What to do
- Power OFF→ON p. 200
- Press "SET" on current alarm screen. p. 200
- Alarm reset (RES) p. 200
- Repair or change the cable. p. 200
- Change the communication device (e.g. personal computer). p. 200
Before you service the product, read the safety instructions in the manual p. 3.
If AL.8E is still not resolved
- contact service / dealer p. 3 “Do not attempt to install, operate, maintain or inspect the servo amplifier and servo motor until you have read through this Instruction Manual, Installation guide, Servo motor Instruction Manual and appended documents carefully and can use the equipment correctly.”
- contact service / dealer p. 4 “Do not attempt to wire the servo amplifier and servo motor until they have been installed. Otherwise, you may get an electric shock.”
This page summarises what the manufacturer’s manual says about AL.8E; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Mitsubishi Electric. Found a mistake? Report an error.