Epson Stylus COLOR 3000, Руководство по обслуживанию, Страница: 29 / 180

Product Descriptions
Rev. A
1-22
Main Command Command name Sending Timing
01h Start Software Reset /INIT signal on the standard parallel I/F
Type-B I/F option command : 01h
Cold Start
04h Send Name Data Type-B I/F command : 05h
07h Inquire Software Emulation Name Changing software Emulation Type
0Eh Inquire ASCII Message Writing to DBIN register
14h Inquire Emergency Reply Reply for Emergency command
15h Send Emergency Message Receive Emergency Command
Emergency Command
0X00 :Get device ID
0X01 :Get all status
Sending BDC-ST through DBIN register
When State-Reply is set “ON” by ST from Type-B I/F, sending BDC-ST through DBIN register is
started. When State-Reply is started, “Start” and “End” of BDC-ST characters are announced by
sending the Main command 0Eh.
1.4.4 Prevention Hosts from Data Transfer Time-out
Generally, hosts abandon data transfer to peripherals when a peripheral is BUSY continuously for dozens
of seconds. To prevent this kind of time-out, the printer receives data very slowly, several bytes par
minute, even the printer is in a busy state. This slowdown starts when the remainder of input buffer drops
under several hundreds of bytes. Finally, the printer is BUSY continuously when the input buffer is full.
1.4.5 Interface Selection
The EPSON Stylus COLOR 3000 has three types of interfaces: Parallel, Serial, and optional Type-B. Each
interface can be selected manually or automatically. Both modes are selected thorough the default setting
mode.
Manual selection
The interface selected through the default setting mode always prints out data from the host.
Automatic selection
Automatic interface selection is enabled in default setting mode. In automatic interface selection
mode, the printer is initialized to the idle state when it is powered on (*1) scanning which interface is to
receive data. Then the interface that received data first is selected. When the host stops data transfer
and the printer is in the standby state for a number of seconds, the printer returns to the idle state. As
long as the host sends data or the printer interface is busy state, the selected interface is left as it is.
*1 No interface is selected in this state.
Interface State and Interface Selection
When an interface other than the parallel interface is selected, the parallel interface goes into the
BUSY state.
When the interface other than serial interface is selected, the serial interface sets the DTR signal
MARK.
When the printer is initialized and returned to idle state, the parallel interface goes into ready state
and the serial interface sets the DTR signal SPACE.
Note) An interrupt signal such as the INIT on the parallel interface is ignored while that interface is not
selected.
1.4.6 Printer language
ESC/P2
IBM XL24E
EPSON Remote
Table 1-27. Supported Main Command and Sending Timing