Mitsubishi Q2ASCPU User Manual page 121

Error
Code Error Contents and Cause
(SD0)
The designation of a MELSECNET/
4300 MINI-S3 master module control
instruction was wrong.
The designation of an AD57/AD58
4301
control instruction was wrong.
No SFCP or SFCPEND instruction in
4400
SFC program.
The block number designated by the
4410
SFC program exceeds the range.
Block number designations overlap in
4411
SFC program.
A step number designated in an SFC
4420
program exceeds the range.
Total number of steps in all SFC
4421
programs exceed the maximum.
Step number designations overlap in
4422
SFC program.
The numbers of BLOCK and BEND
4500 instructions in an SFC program are not
equal.
The configuration of the STEP* to
4501 TRAN* to TSET to SEND instructions in
the SFC program is incorrect.
The structure of the SFC program is
illegal.
4502
• STEPI* instruction does not exist in
the block of the SFC program.
The structure of the SFC program is
illegal.
• The step specified in the TSET
4503 instruction does not exist.
• In jump transition, the host step
number was specified as the
destination step number.
The structure of the SFC program is
illegal.
4504
• The step specified in the TAND
instruction does not exist.
Corrective Action
Read the common information of the
error using the peripheral device, check
error step corresponding to its
numerical value (program error
location), and correct the problem.
Write the program to the CPU module
again using GX Developer.
Write the program to the CPU module
again using the peripheral device.
• Write the program to the CPU module
again using GX Developer.
• Read the common information of the
error using GX Developer, and check
and correct the error step
corresponding to that value (program
error location).
Write the program to the CPU module
again using GX Developer.
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Corresponding
CPU
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