3.1 Basic Functionality
Programs
3-18
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-EXECUTOR
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
SPM001
IF MW000<32767;
MW000=MW000+1;
ELSE;
MW000;
IEND;
Sequence program
M-EXECUTOR Program Execution Definitions
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