Mitsubishi MELSEC Q Series Programming Manual page 989

Error
Code Error Contents and Cause
(SD0)
[SFCP. FORMAT ERR.]
The numbers of BLOCK and BEND instructions in
an SFC program are not equal.
■Collateral information
4500
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
• STOP→RUN
[SFCP. FORMAT ERR.]
The configuration of the STEP* to TRAN* to TSET
to SEND instructions in the SFC program is
incorrect.
4501
■Collateral information
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
• STOP→RUN
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• STEPI* instruction does not exist in the block of
the SFC program.
4502 ■Collateral information
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
• STOP→RUN
[SFCP. FORMAT ERR.]
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.
■Collateral information
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
4503
• STOP→RUN
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• The step specified in the TSET instruction does
not exist.
■Collateral information
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
• When instruction executed
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• The step specified in the TAND instruction does
not exist.
4504
■Collateral information
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
• When instruction executed
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• In the operation output of a step, the SET Sn/
BLmSn or RST Sn/BLmSn instruction was
specified for the host step.
4505
■Collateral information
• Common information: Program error location
• Individual information:-
■Diagnostic Timing
• When instruction executed
Corrective Action
Write the program to the CPU module again using
the programming tool.
• Write the program to the CPU module again
using the programming tool.
• Read common information of the error using
the programming tool to identify the numeric
value (program error location). Check the error
step corresponding to the value, and correct it
as necessary.
Write the program to the CPU module again using
the programming tool.
Read common information of the error using the
programming tool to identify the numeric value
(program error location). Check the error step
corresponding to the value, and correct it as
necessary.
LED Status Corresponding
CPU Status CPU
Qn(H)
QnPH
QnPRH
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
Q00J/Q00/Q01
Qn(H)
QnPH
QnPRH
QnU
LCPU
Q00J/Q00/Q01
Qn(H)
QnPH
QnPRH
QnU
LCPU
RUN:
Off
ERR.:
Flicker
CPU Status:
Q00J/Q00/Q01
Stop
Qn(H)
QnPH
QnPRH
QnU
LCPU
Q00J/Q00/Q01
QnU
LCPU
12-69
1
2
3
12
6
*8
6
7
8
*8
*8
*8