Table of Contents
Advertisement
PAC2000S12-B1 PSU
●
0x80: The PSU is enabled.
●
0x00: The PSU is reset.
●
0x40: The PSU soft-closes the mains output. The PSOK# time sequence meets the requirements.
NO TE
● When the MCU is powered on again or the PSU is removed from the system, the default value 0x80 is
restored.
● Other data is not responded.
● By default, the PSU is shut down 1s after the reset, and is started 10s after being shut down.
PMBUS_CMD_FAN_CONFIG: fan configuration
●
Bit 7: whether position 1 has a fan
–
0: Position 1 has no fan. 1: Position 1 has a fan.
●
Bit 6: format of the fan speed adjustment command
–
0: duty cycle, 1: RPM
●
Bits 5–4: The rotational speed is measured by pulse.
●
Bit 3: whether position 2 has a fan
–
0: Position 2 has no fan. 1: Position 2 has a fan.
●
Bit 2: format of the fan speed adjustment command
–
0: duty cycle, 1: RPM
●
Bits 1–0: The rotational speed is measured by pulse.
PMBUS_CMD_POWER_CYCLE_TIME: shutdown delay time
●
Bits F–8: PSU shutdown delay time
●
Bits 7–0: PSU shutdown time
NO TE
● By default, the PSU is shut down after a delay of 1s, and is started 10s after being shut down.
● The OPERATION# signal can be used. When the active PSU sends the 0x00 reset command, the PSU is reset
based on the set time.
● The CYC_PWR# signal can be used. When the active PSU sets the CYC_PWR# signal low for 100–150 ms, the
PSU is reset based on the set time.
PMBUS_CMD_READ_POWER_TYPE: PSU types
●
0: AC
●
1: 48 V DC
●
2: HVDC
●
3: AC&240 HVDC
●
4: AC&240HVDC&380HVDC
NO TE
Currently, the PSU always reports 3, that is, AC&240HVDC.
PMBUS_CMD_SMART_ON_CONFIG: cold standby configuration command
Technical Manual
10 Communication
52
Advertisement
Table of Contents
