3.1 Basic Functionality
3.1.1 Programs
3-16
Specifying Sequence Programs
Sequence programs must be specified directly. Indirect designations cannot be used.
Specify the program number of the sequence program to execute (SPM
).
Work Registers
Work registers are used to monitor sequence programs.
The work registers have Status Flags inside the M-EXECUTOR control registers, in the same
way as motion programs that are registered in the M-EXECUTOR.
•
Sequence Program Status Flags
The Sequence Program Status Flags give the execution condition of the sequence program.
The following table describes the meanings of the Status Flags.
Bit No.
Name
Status
0
Program Executing
Program is being executed.
1
−
Reserved for system.
2
−
Reserved for system.
3
−
Reserved for system.
4
−
Reserved for system.
5
−
Reserved for system.
6
−
Reserved for system.
7
−
Reserved for system.
8
Program Alarm
There is a program alarm.
9
Program Stopped at Breakpoint
Execution is stopped at a breakpoint.
A
−
Reserved for system.
B
Debug Operation Mode
The program is in Debug Mode (EWS debugging).
C
Program Type
Program Type, 1: Sequence program
D
Start Request History
There is a request to start program execution.
E
−
Reserved for system.
F
−
Reserved for system.
Sequence Program Alarms
When an error is detected, bit 8 (Program Alarm) turns ON in the Status Flags in the M-EXECU-
TOR control registers.
When the error is removed, this bit turns OFF.
The following errors can occur.
•
The called program is not registered.
•
The called program is not a sequence program.
•
The called program is not a subprogram (a main program was called).
•
Called Program Number Limit Exceeded Error
•
Too Many Nesting Levels Error
S
PM001
IF MW000<
3
2767;
MW000=MW000+1;
EL
S
E;
MW000;
IEND;
S
equence program
M-EXECUTOR Program Execution Definition
s
Note
