Detailed Explanation Of Linear Encoder Error 1 (2A) - Mitsubishi Electric MELSERVO-J3 Series Instruction Manual

6. TROUBLESHOOTING

6.3 Detailed explanation of linear encoder error 1 (2A)

If the cause of Linear encoder error 1(2A) occurrence is not identified, confirm the details shown on the
following table according to the alarm detailed information for the alarm history display of MR Configurator, and
then contact with the linear encoder manufacturer.
Table 6.1 Detailed explanation of linear encoder error 1(2A) for each manufacturer
Detail
information bit
AT343A/AT543A
Bit7 Optical overspeed
Bit6 ROM RAM error
Bit5 EEPROM error
Bit4 CPU error
Bit3 Capacitive error
Bit2 Photoelectric error
Photoelectric capaciti
Bit1
ve data mismatch
Bit0 Initialization error
As an example, the following describes the detailed information when Linear encoder error 1(2A) occurs in the
linear encoder AT343A manufactured by Mitutoyo Corporation.
In this case, the alarm detailed information of Linear encoder error 1(2A) is "44". This numeral is indicated in
hexadecimal number. Convert "44" of hexadecimal number to a binary-coded form as shown below.
bit7 Bit6
44h 0 1
The digits for bit6 and bit2 are "1". Check the details of the bit being "1" in Table 6.1. In this case, the
occurrences of ROM RAM error (bit6) and Photoelectric error (bit2) are identified.
Mitutoyo Corporation
ST741/ST743
Servo alarm
Signal strength alarm
Signal strength error
Transducer error
ABS detection error
Hardware error
Initialization error
Overspeed error
Bit5 Bit4 Bit3
0 0 0
Linear encoder error 1 (2A) details
Sony Manufacturing
Systems Corporation
Encoder alarm
Encoder warning
Bit2 Bit1 Bit0
1 0 0
6 - 5
Heidenhain Corporation
Overspeed error
EEPROM error
CPU error
ABS data error
INC data error
Scale level error
INC/ABS data mismatch
error
Initialization error
Alarm details : 44h
Renishaw Inc.
Overspeed
Level error