Download DMC-1300

Program Flow Commands
The DMC 1300 provides instructions to control program flow. The DMC 1300 program sequencer
normally executes program instructions sequentially. The program flow can be altered with the use of
event triggers, trippoints, and conditional jump statements.
Event Triggers & Trippoints
To function independently from the host computer, the DMC 1300 can be programmed to make
decisions based on the occurrence of an event. Such events include waiting for motion to be comp lete,
waiting for a specified amount of time to elapse, or waiting for an input to change logic levels.
The DMC 1300 provides several event triggers that cause the program sequencer to halt until the
specified event occurs. Normally, a program is automatically executed sequentially one line at a time.
When an event trigger instruction is decoded, however, the actual program sequence is halted. The
program sequence does not continue until the event trigger is "tripped". For example, the motion
complete trigger can be used to separate two move sequences in a program. The commands for the
second move sequence will not be executed until the motion is complete on the first motion sequence.
In this way, the DMC 1300 can make decisions based on its own status or external events without
intervention from a host computer.
DMC1000
Chapter 7 Application Programming 7 • 106