Chapter 4 CPU modules MASTER-K
4-19
4.4.4 DEBUG mode
For debugging of user program, the MASTER-K 200S/300S/1000S provides the DEBUG
mode. In the DEBUG mode, the CPU executes user program according to the execution
condition as following;
① Step over : Executes just an operation unit (one instruction)
② Break point : Executes user program until the specified step (break point)
③ Device state : Execute user program until a device (bit or word) assigned to be
monitored is changed to the specified status (read, write, value)
④ Scan loop : Execute user program for specified number of scans
Start DEBUG mode
Clear the non-latched memory area
Execution of user program according
to the specified execution condition
Self-diagnosis
I/O refresh
Execute communication service,
Update timer / counter
Mode changed?
Start other mode
Yes
No
Stop operation
To Next Page
Loading...
