1.3.2 Serial Interface Specifications
Data format: RS-422 serial
Synchronization: Asynchronous
Handshaking: By DTR signal and X-ON/X-OFF protocol
Table 1-10. DTR and X-ON/X-OFF Protocol
State
Buffer Space DTR X-ON/X-OFF
Busy
Less than 512 bytes Off X-OFF
Ready
More than 1,024 bytes On
X-ON
Word length
Start bit:
Data bit:
Parity bit:
Stop bit:
1bit
8bit
none
1bit
Bit rate: 57.6K bps /230.4 Kbps
Adaptable connector: 8-pin mini-circular connector
Recommended I/F cable: Apple
®
System Peripheral-8 cable
Table 1-11. Signal and Connector Pin Assignments for Serial Interface
Pin No.
Signal Name I/O* Description
1
DTR Out Data terminal ready
2
NC — No connection
3
TXD
Out Transmit data
4
SG In Signal ground
5
RXD
In Receive data
6
TXD Out Balanced transmit
7
NC — No connection
8
RXD In Balanced receive
* The I/O column indicates the data flow as viewed from the printer.
Product Description Stylus Pro XL
1-12 Rev.A
