Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 30)

Chapter 3
General Operation
3–8
Control
The user can direct the LSM to perform several different functions by
sending the appropriate block transfer data to the “Control Parameters
Table”. (See Appendix B, “Block Transfer Tables and Discrete I/O
Definition”, for additional information.) The functions that can be initiated
are as follows:
•
Execute Self–Test (If the Execute Self–Test option is selected, no other
control options will be executed.)
•
Clear kW–HR Counter
•
Clear kVAR–HR Counter
Self–test
The LSM automatically performs a complete self–test every time the module
is powered up or when commanded by an instruction embedded in the data
sent via the control parameters block transfer write. The content of the data
memory before the test is executed will be destroyed. However, the
configuration parameters are maintained. If the self–test request is sent via
the block transfer, it is performed once. The request must be repeated for
additional tests. The self–test verifies the contents of the program memory,
verifies performance of data memory, verifies the stored configuration data,
checks the watchdog circuitry, and checks the performance of the analog
input and analog output circuits to the extent possible.
A limited self–test that checks the validity of the stored configuration data
and a limited test of the performance of the analog inputs is automatically
performed at periodic intervals during normal operation.
Results of the self–test, either the full version or the limited version, are
indicated in the module diagnostics available from the block transfer read
data. (See Appendix B, “Block Transfer Tables and Discrete I/O Definition”,
for additional information.) The diagnostic information that is available from
the module is as follows:
•
Bulletin Number
•
Options
•
Firmware Version
•
ROM Status
•
RAM Status
•
EEPROM Status
•
Analog Power Supply Status
•
Data Acquisition Status
•
Load Share D/A and A/D Converter Status
•
Watchdog Timer Status
•
Module Date / Time
Operational Characteristics
Continued