Manual

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integer values and the CXC may require numbers accurate to two decimal places, values are multiplied
by 100 before sending over SNMP. So, for example, to set a signal to a value of “1”, the user should actu-
ally do an SNMP set with value “100”. Similarly, a signal with value “1” will be received by SNMP as “100”
and should be divided by 100 to determine the actual signal value. Note also that since signal values are
not saved over a CXC reset (but instead re-evaluated after reset), any value previously set by SNMP will
be lost during reset and the signal will go back to value “0”
2.14 Statistics and Historical Data
The CXC is capable of tracking several statistical parameters on a daily basis: analog statistics, for ex-
ample, and triggered items such as battery log and event log.
Data is stored in local memory and can be accessed via a web interface (see Data Logging in Section
6.7.3 ). The logged data is comma-delimited so it can automatically viewed in rows and columns in MS
Excel. The data is stored on a first-in-first-out basis.
2.14.1 Analog Statistics
All statistics, to a maximum of 90 records (one per day) contain a time stamp and date. Daily analog
statistics include the minimum, maximum and average of:
Load Voltage Load Current
Battery Voltage Battery Current
AC Mains Battery Temperature
Total Rectier Current Average DC Voltage
Average AC Voltage Number of Acquired Rectiers
Number of Sourcing Rectiers Ten Custom Signals
2.14. 2 Battery Log
A maximum of 40 records can be logged for battery statistics and events. The Battery Log contains the
following:
Event Type Capacity Rating
Battery Test Start Time Depth of Discharge
Discharge Duration Time Capacity
Amp Hours Delivered Recharge Duration
Amp Hours Recharge Return Peukert Number
1-5 Max. Midpoint Deviation Discharge Data1
1-5 Max. Midpoint Deviation Recharge Data2
Battery Current/Average Battery Current Battery Temperature/Average Battery Temperature
Battery Voltage/Battery Test End Voltage Open Circuit Voltage
Battery Test Result
During a battery discharge, active battery log information is displayed in a row above the Battery Log.
This information is then no longer available after the battery has finished recharging.
The Battery Log also provides support for very slow discharges. This is accomplished by saving interme-
diate battery log information in the event of controller power loss before battery recharge completes.
When a battery test (BT) is started remotely, the battery log shows Remote BT in the Event Type column.