Magic Packet™ Frame Format; Serial Port Setting; Built-In Lan Interface (1000Base-T/100Base-Tx/10Base-T) - Hitachi HF-W2000 35 User Manual

3.7.3 Magic Packet™ frame format
The format of the Magic Packet™ frame is illustrated below. The Magic Packet™ frame
must meet the basic requirements of the LAN being used, such as source address,
destination address (recipient's MAC address or multicast address including broadcast
address), and CRC. The data sequence in the Magic Packet™ frame is formed by
repeating the MAC address of the node 16 times. This sequence may be positioned at any
place in the packet as long as it is immediately preceded by the synchronization stream
defined as 6-byte 0xFF. If the MAC address of the node matches that of the target PC
subject to main power control, the PC also receives a broadcast frame.
DA SA
Source Address
Destination Address
< NOTE >
Possible error due to timing of Magic Packet™ frame transmission:
Implement proper measures so that the Magic Packet™ frame transmission always takes
place while the primary power of the Equipment is off. If the transmission of Magic
Packet™ frame takes place during actual turning off of the primary power after the
completion of OS shutdown process, the Equipment may restart without turning off the
primary power or become incapable of WOL.

3.8 Serial Port Setting

The Equipment is shipped with the default serial port settings shown below. Do not
change the default settings.
I/O address* IRQ assignment* Name on OS Remarks
3F8h IRQ4
2F8h IRQ3
* Automatically assigned by BIOS.

3.9 Built-in LAN Interface (1000BASE-T/100BASE-TX/10BASE-T)

The Equipment provides two ports of 1000BASE-T/100BASE-TX/10BASE-T built-in
LAN interface. See Section 2.1, "External Views of Operator Access Areas" for the
physical location of the LAN interface connectors.
< NOTE >
Setting of "Reconnect at logon" sometimes fails to take effect. If such failure happens,
manually log on to the network drive or connect the network drive with the "net use"
command. See Windows® Help for the "net use" command.
Any data FF...FF Adr
MAC address of node repeated 16 times
Synchronization stream (6-byte 0xFF)
COM1
COM2
... Adr Adr Any data
Standard
Option
3-9
3. OPERATION
CRC