106
4300
The designation of a MELSECNET/
MINI-S3 master module control
instruction was wrong.
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.
QnA
4301
The designation of an AD57/AD58
control instruction was wrong.
QnA
4400
No SFCP or SFCPEND instruction in
SFC program.
Write the program to the CPU module
again using GX Developer.
QnA
4410
The block number designated by the
SFC program exceeds the range.
QnA
4411
Block number designations overlap in
SFC program.
QnA
4420
A step number designated in an SFC
program exceeds the range.
QnA
4421
Total number of steps in all SFC
programs exceed the maximum.
QnA
4422
Step number designations overlap in
SFC program.
QnA
4500
The numbers of BLOCK and BEND
instructions in an SFC program are not
equal.
Write the program to the CPU module
again using the peripheral device.
QnA
4501
The configuration of the STEP* to
TRAN* to TSET to SEND instructions in
the SFC program is incorrect.
QnA
4502
The structure of the SFC program is
illegal.
• STEPI* instruction does not exist in
the block of the SFC program.
QnA
4503
The structure of the SFC program is
illegal.
• The step specified in the TSET
instruction does not exist.
• In jump transition, the host step
number was specified as the
destination step number.
• 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).
QnA
4504
The structure of the SFC program is
illegal.
• The step specified in the TAND
instruction does not exist.
Write the program to the CPU module
again using GX Developer.
QnA
Error
Code
(SD0)
Error Contents and Cause
Corrective Action
Corresponding
CPU