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PAC3000S12-T1 PSU
LED_CTRL (0xED)
Bit No.
Description
Bit 7
1: System control (bit 0 and bit 1 are valid). 0: PSU automatic control
Bit 1
LED orange (If 1 is written to bit 0 and bit 1 at the same time, the command is
invalid.)
1: On; 0: Off
Bit 0
LED green (If 1 is written to bit 0 and bit 1 at the same time, the command is
invalid.)
1: On; 0: Off
10.6 Online Upgrade
Both the primary and secondary sides of the PSU support online upgrade.
10.7 Black Box Function
The PSU has 440-byte space for storing event logs. The PSU provides a read channel for external
systems by the Read Event Log command.
10.7.1 Runtime Counter
The PSU needs to calculate the total runtime. The total runtime is the sum of the time when the
PSU works properly (OPOK is normal), is presented in the unit of seconds, and occupies four bytes.
10.7.2 Calibration
The PSU stores calibration information, such as input power calibration and output current
calibration, in the event log. 0x1D in the EEPROM is a calibration key (this function does not have to
be used). 0x21 to 0x27 store calibration data, including seven bytes in total (if seven bytes are
insufficient, the data can be stored in other places). The calibration information to be stored in each
bit is defined by the PSU manufacturer. Only when the data of the calibration key register is 0x4B,
the PSU can write calibration data into registers 0x21 to 0x27 by running a write command. If the
calibration key data is 0x4B, the PSU can write data into all read-only (RO) registers of fault records.
After production and testing are complete, the PSU can clear logs using this method and write the
barcode and production date into Offset 0–23. The PSU must clear data of the 0x1D register each
time when the MCU is re-powered on. After clearing, the data is 0x00.
10.7.3 Event Log
The PSU maintains a circular event log of the last ten records. Before saving the event log, the PSU
shall set the event update flag in the event log to 1. Each event shall start with an event number
followed by a 4-byte runtime (measured in seconds). The total runtime must be updated before the
log is saved.
Technical Manual
10 Communication
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