Appendix E: Event Step Link Reference
E-25
• The disadvantage of this method is that many users will find it confusing to have to reverse the
sense of the last condition in the polling loop. That is, the user has to use the Timer Not Expired
(t) link type instead of the more intuitive Timer Expired (T) link type. This situation is not unique to
using the Timer link types, but will occur with any series of polling link types for the last condition
in the polling cycle.
Example 4:
In this example, the user wants to complete a move, and then turn on and off discrete output 0 at
five and ten seconds respectively since the start of the move.
11
0x0000
0x0081
0x0000
0x0000
0x0000
0
100
0
0
0
100
0
0
0
10000
0
0
Va
0
4000
0
0x0001
0x0001
Axes
TimerSt/Exp
BitsON
TimerSt/Exp
TimerSt/Exp
DelayMS
0
0x0001
5000
10000
0
11
12
13
0
Step 10 starts the timer and links immediately to step 11.
Step 11 starts the move and waits for the move to complete using the BitsON (B) link type before
linking to step 12.
Step 12 waits until five seconds have expired since the timer was started in step 10 before linking
to step 13.
Step 13 turns on discrete output 0 and waits until ten seconds have expired since the timer was
started in step 10 before linking to step 14.
Step 14 turns discrete output 0 back off before linking back to step 0.
Using with the Link Type and Link Value Dialog Box
1. Under Link Type Category, select System-wide (Basic, non-axis).
2. Under Link Type, select Timer.
3. Under Link Condition, select one of the following:
• If you want to start the timer, select Start the Timer and Link to the Link Next.
• If you want to take the link when the timer reaches or passes its preset, select Link if the
Timer is Expired.
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