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Troubleshooting using the Error Log
Section 7-5
7-5-2 Error Codes
The error codes are described in the following table. The detailed error code
will provide detailed information on an error.
Note 1. The time information from the CPU Unit is used in the PROFIBUS-DP
Master Unit.
2. An error record is not created in non-volatile memory when the error con-
cerns an Error Log Write error.
Error
code
Meaning Detailed error code Correction Non-
volatile
1st byte 2nd byte
0001 Watchdog timer error in CPU
Unit.
00 00 Replace the PLC CPU Unit. Saved
0002 CPU Unit service monitor error. Actual monitoring time ms (Hex) Check the operating environment. Saved
000E PLC Bus error. 00 00 Replace the CPU Unit. Saved
0202 PROFIBUS parameter set
invalid.
00 80: Bus param-
eter error
00 ~ 7D: Slave
parameter error
• Check the parameter settings.
• re-download the configuration if
necessary.
---
020C Protocol error 00 00 ~ 7D: Fail-
ing Master
Address
• Check the Master stations on
the network, and make sure they
are all working correctly.
• Check the HSA setting in CX-
Profibus, and make sure it is set
to the Master station with the
highest address on the network.
---
0211 Duplicate Master address 00 00 ~ 7D: Fail-
ing Master
Address
Check the Master Stations on the
network and ensure that they have
unique station addresses.
---
0219 Hardware error 00 00 • Check the network wiring, and
make sure it is correct.
• Check for short-circuits.
• Check the bus timing set
through CX-Profibus.
• Check if any other faulty devices
are on the same network.
• Verify that the Highest Station
Address setting includes any
other Master Address on the
bus.
---
0601 CPU Bus Unit fatal error. Error address in program. Restart the CPU Unit. If the prob-
lem persists, replace the PROFI-
BUS-DP Master Unit.
Saved
0602 CPU Bus Unit memory error. 01: Read error.
02: Write error.
02: Network
Parameter.
06: Error log.
Restart the CPU Unit. If the prob-
lem persists, replace the PROFI-
BUS Master Unit.
Saved
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