Delta MMC120 User Manual Page 53

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53
The command in an event will be executed as soon as a step is reached in the event
sequence.
The next Step in the sequence will be executed as soon as the conditions from the
LinkTypeandLinkValueare met.
Multiple axes can be made to follow identical patterns simultaneously by using the
same steps on each.
You cannot conditionally branch steps. This is because each step only has a single
Link Next field.
Example
In the following example three steps are executed. They cause the axis to make a move,
wait and then make another move:
Step 15
Step 16 Step 17
Mode
00001 00001 00001
Accel
100 100 100
Decel
100 100 100
Speed
10000 10000 10000
Command Value
15500 10000 3000
Command
GG
Link Type
BD D
Link Value
00001 500 0
Link Next
16 17 0
Step 15 issues a Go command to 15.5 inches (15500). The link type is B with a link
value of 00001, which causes the motion controller to look for the least significant bit in
the STATUS word (the In Position bit). When the In Position bit turns on, indicating the
move is complete, Step 16 (Link Next 16) is executed.
Step 16 has no command so no command is issued. The link type is a Delay with a value
of 500 milliseconds. After 500 milliseconds pass, Step 17 executes.
Step 17 issues a Go commandto3inches. TheLinkTypeDwithavalueof0(zero)
causes the axis to go immediately to Step 0, which ends the sequence.
FLASH Memory
The MMC120 contains FLASH memory that has two user-accessible sections. Section 1
contains the following:
All axes’ parameters
The profile table
Section 2 contains the following data:
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