Troubleshooting - Hitachi EHV+ Series Applications Manual

Chapter 3 General Specifications

3.16 Troubleshooting

Error code
The CPU has 7-segment display and error LED to indicate an error code as listed below. If two or more errors are
detected at the same time, smaller error code has higher priority to be displayed. If error is detected, read the
descriptake following countermeasures depending on error level.
Error code Error level
88, 11 to 1F Serious error
20 to 31 Exception
70 to 78 Warning
Err. Error name
code [Detected when]
88 Microprocessor failure
[Power on]
11 System program error
(FLASH)
[Power on]
12 System RAM failure
[Power on]
Misalignment /
13
Illegal instruction /
Privileged instruction
[Always]
15 Program RAM failure
[Power on]
16 System program error
(system RAM)
18 MAC address error
[Power on]
19 Data memory failure
[Power on]
1F System program error
(FLASH)
[Always]
: ON, : Blink,
ERR LED
RUN LED
E.CLR button
7 - segment LED
Countermeasure
Cycle power. If it does not solve, contact your local supplier.
Exception status is cleared only by Reset operation.
Execute Reset cold/warm/origin by EHV-CoDeSys
User program execution does not stop by warning. If you need to activate alarm or
any action by warning, use CmpHitachi library.
Press E.CLR button to clear error code.
Description
Overflow of internal watchdog timer due to
system program error.
Checksum value of system program (Runtime)
in FLASH does not match the checksum
calculated.
Read/write check for system RAM has failed.
Microprocessor has detected an exception
processing in system program.
Read/write check for program RAM has failed.
Checksum value of system RAM does not match
the checksum calculated.
MAC address is missing or wrong value.
Read/write check for data memory (RAM) has
failed.
Checksum value of system program (reset
process) in FLASH does not match the
checksum calculated.
: OFF
3 – 48
PLC Applica- ERR
system tion LED
Stop Stop
Stop Stop
Stop Stop
Stop Stop
Stop Stop
Stop Stop
Stop Stop
Stop Stop
Stop Stop