The Impact Of Plc Run Or Stop On Variables And Devices; Relationship Between Motion Program And Motion Bus - Delta Electronics DVP15MC11T Operation Manual

DVP15MC11T Operation Manual
7.2 The Impact of PLC RUN or STOP on Variables and
Devices
When DVP15MC11T is switched from RUN to STOP, variables and devices keep current values. When
DVP15MC11T is switched from STOP to RUN, users can select one option that the values of variables and
non-latched devices are cleared or retained as below.

The values of variables and non-latched devices are cleared.
When DVP15MC11T is switched from STOP to RUN, the values of variables and non-latched devices are
cleared and restored to the initial values. If variables and non-latched devices have no initial values, the
values of variables and non-latched areas will be restored to the default value 0.

The values of variables and devices are retained.
When DVP15MC11T is switched from STOP to RUN, variables and devices keep current values.
7.3

Relationship between Motion Program and Motion Bus

DVP15MC11T makes the synchronization achieved through issuing SYNC signal in the method of
broadcasting while more than one servo is connected with DVP15MC11T. The servo drives receive the
control data sent by DVP15MC11T. But the control data received will not be effective right away until the
SYNC signal comes to the servos so as to realize the synchronization of multiple servos.
In the following figure, DVP15MC11T is connected with 4 servo drives and T is the synchronization period.
The four servo drives receive control data at different time (t1, t2, t3 and t4) but the control data received are
not effective at once. As the servo drives receive SYNC signal, the control data will go effective immediately.
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