Siemens 9810 Series, User Manual, Page: 52 / 218

Communications
If the meter receives a write command to a read-only Modbus register address,
exception code 3 (illegal value) is returned.
Fixed and configurable Modbus map
Your device has a fixed (static) register map for meter data and a flexible, user-
configured register map.
Modbus security
Your meter’s onboard security options include Modbus-specific settings. These
security settings may need to be configured in order to write Modbus data to the
meter.
Modbus map
Your meter’s default Modbus register information (map) is available for download
from www.usa.siemens.com/pds.
The Modbus register information includes:
• registers and mapped values
• formats and scaling
• additional details where applicable
NOTE: Your meter’s Modbus registers are specified differently than previous
devices using ION architecture. If you are configuring Modbus slave
information on your meter, confirm you are using the appropriate Modbus
register addressing. Refer to your meter’s Modbus map for more information.
Your meter has a fixed (static) register map which contains the most common
metering values. This map is defined by a series of Data Mapping modules, which
also determine the values shown on your device’s display and webpages. The
Data Mapping modules are named based on the type of information they map to
Modbus:
Data Mapping module Description
Data Mapping Dmd Modules Maps kW, kVA and kVAR demand data such as
kW sd del (sliding demand kilowatts delivered)
as well as current demand such as I a sd (sliding
demand phase A current).
Data Mapping Egy Modules Maps kWh, kVAh and kVARh delivered and
received data, including conditional, quadrant
and incremental energies.
Data Mapping EN Modules Maps present interval EN50160 power quality
compliance data.
Data Mapping EN Prev Modules Maps previous interval EN50160 power quality
compliance data.
Data Mapping I/O Modules Maps input metering data, alarms, resets and
reset counts.
Data Mapping Meas Modules Maps measured data from the standard and
high-speed Power Meter module.
The Cfg Modbus Map Enable setup register may
exist in this module.
Data Mapping PQ Modules Maps power quality data such as Crest Factor, K
Factor and total harmonic distortion, including
IEC 61000-4-30 power quality compliance data.
Data Mapping Stats Modules Maps statistical low, mean and high data values,
such as I a mean (phase A current average
value).
Data Mapping TOU Modules Maps time-of-use (TOU) data, such as seasons,
rates, and per-season demand such as kW sd
rec A (sliding demand kilowatts received in
season A).
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