BP-007 User’s Manual
- 38 -
The printer is ONLINE
The available memory of data buffer is larger than limited value.
The printer has no error.
When the DTR is Low level means the printer is BUSY and it can’t receive the data from the Host.
DTR is Low level when it belongs to the following three conditions:
The printer is OFFLINE
The available memory of data buffer is less than limited value.
The printer has error
2. X-ON/X-OFF communication protocol
When the printer sends X-ON (11H) code to the Host through TXD, it means the printer is FREE
and it can receive data from the Host. When the available memory of the printer’s data buffer is
greater than limited value, the printer can send the X-ON code when it is in the following two
conditions:
The printer becomes FREE from BUSY
The printer becomes ONLINE from OFFLINE
When the printer sends X-OFF (13H) code to the Host through TXD, it means the printer is BUSY
and it can’t receive the data from the Host. The printer can send the X-OFF code when it is in the
following conditions:
The printer becomes BUSY from FREE
The printer becomes OFFLINE from ONLINE
The available memory of the printer’s data buffer is less than limited value
The printer has error
The printer is out of paper
(5) Serial data receive/send format
The serial data is consisted of original bit (1 bit), data bit (8 bits), check bit (1 bit) and stop bit (1 bit).
(As shown in figure 5-8)
5.2.5 Ethernet Interface
10/100Base-T Ethernet interface can connect to 10/100M Ethernet.
Figure 5-9 Ethernet interface
Figure 5-8 Serial data format
Original bit D1 D2 D3 D4 D5 D6 D7 D8 Check bit
Stop bit
Data bit
To Next Page
Loading...
