Epson Stylus Pro 7400 - Chapter 1 Product Description; Received Buffer Full Operation; Interface Selection

EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Product Description Interface 143

Supported Packet
Apply the following communication packet.
 Local MIB
According to Type-B Level 3 Packet Mode correspondence, it corresponds to
Local MIB (Type-B/EMAP).
Refer to “1.4.7 MIB Function” (p.136)
1.6.4 Received Buffer Full Operation
If the receiving buffer free space becomes less than 32Kbytes when data is being
received from the USB interface or IEEE1394 interface, and there are no errors
occurring (including the pause status), the printer is limited to receiving data at 40byte/
sec, which prevents a host data transmission timeout. When the receiving buffer returns
to above 36Kbytes of free space, receiving returns to normal.
NOTE: This status is not occurred in Type-B Level 3 Packet Mode for Credit
administration.
1.6.5 Interface Selection
The printer has IEEE1394 interface, USB 2.0 interface, and optional interface. These
interfaces are selected manually by the default setting mode or selected automatically.
 Manual selection
One of 3 interfaces can be selected; IEEE1394 interface, USB 2.0 interface,
optional interface.
 Automatic detection
An interface used for the first print job after power-On is automatically determined
to be used from then. If the first job is interrupted in the middle of the data
transmission, and not restarted within 10 seconds, the printer goes back to idle
status and determines the interface which is used for the next job.
NOTE: This status is not implemented in Type-B Level 3 Packet Mode for
Channel administration. To move to idle status, close the
DataChannel.
 Interface Selection and Interface State
When the printer is initialized or returned to the idle status (any interface is not
selected), the USB interface becomes non-NACK reply status, and the option
interface resets OFF-LINE bit of Main Status Register (MNSTS).
Table 1-71. Supported Packet
Packet description Channel
EPSONPackingCommand/Reply Packet Mode shifting Ch00
Init/Reply Initialization Ch00
Exit/Reply Exit from Packet Mode Ch00
GetSocketID/Reply Acquisition of Socket ID Ch00
GetServiceName/Reply Acquisition of Service Name Ch00
OPENChannel/Reply Open Channel Ch00
CloseChannel/Reply Close Channel Ch00
Credit/Reply Send Credit Ch40
DataPacket Printing data / reverse data Ch40
MessagePacket MIB PDU/Trap PDU etc. Ch04/05
OutofBandPacket Job control information etc. Ch40