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Chapter 10
Working with Scheduled Data
10.1
Introduction
Scheduled data is defined as energy usage, measured over a specific time interval, stored in the
Model 1133A flash memory for revenue purposes. Scheduled data may be specified at different
intervals defined by the user, every fifteen minutes being common. Since the 1133A partitions flash
memory between scheduled data and event data, it is up to the user to set the amount of storage
required ahead of time. To do this, see Flash Memory Management in Chapter 7.
10.1.1
Topics Addressed in this Section
◦
Protocols
◦
Checking Status
◦
Configuring
◦
Downloading
◦
Erasing
10.1.2
Protocols
Currently, there are several protocols available for scheduled data in the Model 1133A: Arbiter’s
PSCSV software, DNP 3.0 and Modbus. KYZ is also used to meter scheduled data and is supported
in the 1133A. To set Kp Register Scale Factors used with KYZ Pulse Metering, see Section 7.10.3.
Another major protocol used to receive scheduled data from various metering devices is MV90. At
this time the 1133A does not comply with MV90, however Arbiter Systems is working on being
MV90 compliant.
10.1.3
Registered or Scheduled Data
The 1133A uses the standard 32 megabyte flash memory module to store scheduled data and uses
FRAM to store Scheduled data in counter registers. FRAM uses ferrite technology to store data
for up to 10 years and has no write speed limitations like other storage devices. It is ideal for
nonvolatile memory applications requiring frequent or rapid writes.