DPMS XPQ, User Manual

Page: 67 / 134

65
POWER INSTRUMENTS
calculation and the demands update at the end of each period.
Synchronization demand
When it is set as a fixed window, rolling window or thermal demand, the
period can be synchronized via communication port or by changes of DI.
DI Synchronization demand
Changes to DI can trigger the synchronization of the demand period. The
set is as follows.
1. Select a method from fixed window, rolling window or thermal demand.
2. Select a DI port (address is 1040H) as the trigger, the values are 0~4
corresponding to none and D1~D4.
3. Select the trigger mode of DI (address is 1041H), the values are 1~3
corresponding to from OFF to ON, from ON to OFF, triggering at any
change.
Command Synchronization demand
Using a broadcast command to synchronize the demand, calculation can
be set as follows:
1. Select a method from fixed window, rolling window or thermal demand.
2. Broadcast command: the addresses of all the meters are considered 0.
Write ff00H to address 8000H using the 10H command. But the receiver
may not answer.
Note: All operations can only be finished via communication. Using key
functions can only partially finish them.