Siemens ACCESS 9340 Reference Manual page 219

PMCM-9340D-0208
2/2008
Using the Command Interface to Change Configuration Registers
© 2008 Siemens Energy & Automation, Inc. All Rights Reserved
You can also use the command interface to change values in
selected metering-related registers, such as setting the time of day of
the clock or resetting generic demand.
Two commands, 9020 and 9021, work together as part of the
command interface procedure when you use it to change meter
configuration. You must first issue command 9020 to enter into setup
mode, change the register, and then issue 9021 to save your
changes and exit setup mode.
Only one setup session is allowed at a time. While in this mode, if the
meter detects more than two minutes of inactivity, that is, if you do not
write any register values or press any buttons on the display, the
meter will timeout and restore the original configuration values. All
changes will be lost. Also, if the meter loses power or
communications while in setup mode, your changes will be lost.
The general procedure for changing configuration registers using the
command interface is as follows:
1. Issue command 9020 in register 8000 to enter into the setup
mode.
2. Make changes to the appropriate register by writing the new value
to that register. Perform register writes to all registers that you
want to change. For instructions on reading and writing registers,
see "View the Meter Information" on page 35 in Chapter 3—
Operation.
3. To save the changes, write the value 1 to register 8001.
NOTE: Writing any other value except 1 to register 8001 lets you
exit setup mode without saving your changes.
4. Issue command 9021 in register 8000 to initiate the save and
reset the meter.
For example, the procedure to change the demand interval for current
is as follows:
1. Issue command code 9020 in register 8000.
2. Write the new demand interval to register 1801.
3. Write 1 to register 8001.
4. Issue command code 9021 in register 8000.
See Appendix A—Meter Register List on page 119 for those
registers that require you to enter setup mode to make changes to the
registers.
ACCESS 9340 and 9360 Meters
Appendix B—Using the Command Interface
EN–211