Delta DVP-20PM

9 Electronic Cam
9.2.3.2 Starting/Stopping a Noncyclic Electronic Cam
In noncyclic electronic cam, Master and Slave operate according to the user-defined electronic cam
data only when electronic cam start signal (START0/PG0) is triggered. Unlike cyclic electronic cam,
noncyclic electronic cam operates only one cycle for each triggered signal, i.e. electronic cam data
operates only once for one triggered signal.
Before selecting START0 as the start signal, M1035 has to be set ON for setting STOP0/START0 as
the external input. After M1746=OFF START0 will be enabled as the start signal of noncyclic electronic
cam rather than PG0.
Electronic cam data
Slave max=180
()
Slave unit
Master =360max () Master unit
 Starting a noncyclic electronic cam
The steps of starting a noncyclic electronic cam are as follows.
1. In T1, D1846 bit 14=ON, noncyclic electronic cam is enabled
2. After the initialization interval of T2, M1812=ON to indicate the completion of electronic cam
initialization. At this time Slave is still not activated.
3. In T3, noncyclic operation starts after START0/PG0 (Input terminal for enabling noncyclic
electronic cam) is ON. When M1746=ON, PG0 is the start signal of noncyclic electronic cam;
when M1746=OFF and M1035=ON, START0 is the start signal of noncyclic electronic cam. In
this case Slave starts to operate a cycle according to the electronic cam data. (“M1035=ON”
enables START0/STOP0 as the external input point).
4. When the cycle is completed at T4, DVP-20PM will clear the state of M1812=ON. In addition,
users can also confirm the electronic cam completion by ON state of M1813.
5. In T5, users can decide whether to set ON M1812 for confirming the next electronic cam
completion.
6. In T6 and T7, actions of T3~T4 will be repeated. Please note that the interval for enabling
noncyclic electronic cam should be longer than 5ms.
7. CLR0 outputs according to the upper/lower bound of sync output during each electronic cam
cycle.
T1
T2
n
n+60 n+300
Reset by user
E-CAM start signal PG0 / Start0()
T
3
T6
> 5ms
Set by user
T5
T4 T7
Reset
by system
Set by system
Reset by system
Slave
Position
D1846 b14=ON
enables noncyclic E-CAM
M1812=ON,
initialization completed
Master
position
CLR0 sync output
M1813, E-CAM completion
DVP-20PM Application Manual
9-13