Power Meter Bulletin No. 3020IM9503R6/98
Appendix E—Using the Command Interface December 1998
80 1998 Square D All Rights Reserved
3. Write the value in register 2028 into register 7721.
4. Write the decimal value 2020 into register 7720.
5. Change to binary mode and read register 7755.
6. Change bit 0, the least significant or right-most bit, to a 0 and write the
new value back to register 7755.
7. Change back to decimal mode and read register 2028.
8. Write the value of register 2028 into register 7721.
9. Write the decimal value 2050 into register 7720. The changes are saved and
the power meter resets.
SYNCH TO COMMS (PM-650 Only)
Using command 5910, it is possible to synchronize the demand intervals of
multiple meters on a communications network. For example, a PLC input
could be monitoring the utility revenue meter’s end-of-demand-interval pulse.
The PLC can be programmed to issue command 5910 to multiple meters
whenever the utility meter starts a new demand interval. This technique
causes the demand readings of each meter to be calculated over the same
fixed block interval.
Enter the command code to register 7700 via communications.
Command Code Description
5910 Start a new demand interval (if demand interval is 0)
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