18 - 44
18.4 Error Code and Error Message Lists
18.4.1 Actions by error codes generated at function execution
18
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Table18.8 Common error codes returned by bus interface functions and MELSEC data link functions (Continued)
Return value
(HEX)
Error description Corrective action
-28627
(0x902D)
Transient unsupported error
A transient demand cannot be executed for the specified path and
target.
(By CC-Link communication, when the station number of the own
station was “64”, other station was specified.)
Check the path and target by which the
transient demand is supported.
Change the station number of the own station.
-28628
(0x902C)
Pointer address specification error
Pointer address was invalid.
• An address of a short type pointer is not a multiple of 2.
• An address of a long pointer is not a multiple of 4.
Check the type of the specified pointer.
Check the specified pointer address.
-28629
(0x902B)
WDT not running error
WDT reset was executed when WDT was not start.
Start the WDT.
-28630
(0x902A)
WDT startup impossible error
WDT start was executed when WDT was start.
Execute WDT start when WDT was not start.
-28631
(0x9029)
Buffer access range error
The specified offset is out of range.
The specified offset + size is out of range.
Check the specified offset.
Check the specified offset + size.
-28632
(0x9028)
I/O number error
The specified I/O number is out of range.
The module does not exist at the specified I/O number.
Check the specified I/O number.
-28633
(0x9027)
Non-controlled module read error
The non-controlled module data was read when parameter setting
did not allow.
Allow the non-controlled module read by
parameter.
-28634
(0x9026)
Intelligent function module down error
Intelligent function module down error occurred.
Check the specified intelligent function module.
Exchange the intelligent function module or
base unit.
-28635
(0x9025)
Intelligent function module error
The slot where there is no intelligent function module was accessed.
Check the specified I/O number.
Check the specified intelligent function module.
-28636
(0x9024)
Control bus error
Control bus error occurred.
When multiple CPU configuration, check that
an error occurred at CPU No.1.
Check the specified intelligent function module.
Exchange the intelligent function module or
base unit.
-28638
(0x9022)
Multiple CPU unsupported operation error Reset CPU No.1.
-28640
(0x9020)
Stop/pause error
Output data was written to output module when the CPU execution
status is stop /pause.
Buffer memory data was written to intelligent function module when
the CPU execution status is stop /pause.
Check that the CPU execution status is "run".
-28653
(0x9013)
Input/output assignment error
Input data was read from output module.
Output data was written to input module.
Output data was read from input module.
Check the specified I/O number.
-28654
(0x9012)
Non-controlled module write error
Own CPU does not control the specified module.
Check that the control CPU of the specified
module is own CPU.
-28660
(0x900C)
Access size error
The specified size is out of range.
Check the specified offset and size.
-28661
(0x900B)
Access impossible error
The specified area cannot access.
Check the specified offset and size.
-28662
(0x900A)
CPU number specification error
The specified CPU number Is out of range.
The specified CPU number Is invalid.
Check the specified CPU number.
Check the operation status of the specified
CPU.
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