TEC B-880 series, User Manual

Page: 44 / 180

1-6
1. OUTLINE OF THE SYSTEM
EO10-33008
1. 5 ELCTRONICS SPECIFICATIONS
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READY/BUSY (DTR) protocol
•
When initialized after power on, this printer becomes ready to receive data and
converts the DTR signal to "High" level (READY).
• The printer converts the DTR signal to "LOW" level (BUSY) when the blank positions
in the receive buffer amount to 800 Bytes or less.
• The printer converts the DTR signal to "High" level (READY) when the blank position
in the receive buffer amount to 2KB or more.
• When there are no blank position in the receive buffer, the printer discards data
received which exceeds the receive buffer capacity, without storing it in the buffer.
(After detecting a BUSY signal, the host computer must stop transmission before the
printer receive buffer becomes full.)
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XON/XOFF (DC1/DC3) pr READY/BUSY (DTR) protocol
• When initialized after power on, this printer becomes ready to receive data and
converts the DTR signal to "High" level (READY). The printer sends an XON code
(11H).
• When the blank positions in the receive buffer are 800 Bytes or less, the printer
converts the DTR signal to "LOW" level (BUSY) and sends an XOFF code (13H).
• When the bland positions in the receive buffer are 2KB or more, the printer converts
the DTR signal to "High" level (READY) and sends an XON code (11H).
• When there are no blank positions in the receive buffer, the printer discards data
received which exceeds the receive buffer capacity, without storing it in the buffer.
(After detecting the XOFF code or BUSY signal, the host computer must stop
transmission before the printer receive buffer becomes full.)
• The printer sends an XOFF code (13H) at power off time.
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READY/BUSY (RTS) Protocol
•
When initialized after power on, this printer becomes ready to receive data and
converts the RTS signal to "High" level (READY).
• The printer converts the RTS signal to “Low” level (BUSY) when the blank positions in
the receive buffer amount to 800 Bytes or less.
• The printer converts the RTS signal to “High” level (READY) when the blank positions
in the receive buffer amount to 2 KB or more.
• When there are no blank position in the receive buffer, the printer discards data
received which exceed the receive buffer capacity, without storing it in the buffer. (After
detecting a BUSY signal, the host computer must stop transmission before the printer
receive buffer becomes full.)
• Both the DTR signal output from the printer and the DSR signal output from the PC are
always “High”.
NOTES:1. When performing the flow control with Windows, in the port setting screen,
select “Hardware” for flow control. [set to the READY/BUSY (RTS) protocol]
2. Under the READY/BUSY (DTR) protocol, after turning the printer power ON,
send data 200ms after the DTR signal is converted to “High” level (READY).
And under the READY/BUSY (RTS) protocol, after turning the printer power
ON, send data 200ms after the RTS signal is converted to “High” level
(READY).