Compuprint 4247-L03 Programmer Manua - Manual (Page 177)

Mode IEEE 1284
The Serial Interface
This printer provides the RS-232/C serial interfaces. The interface mode is selected via menu.
v Transmission Type
Data is sent and received in start/stop (asynchronous) transmission.
v Character Format
Each character is transmitted in the following format:
1 START BIT + 8 DATA BITS + 1 PARITY BIT + 1 STOP BIT
The least significant bit of the data bits is sent first after the start bit. The number of data bits is selected
via menu. The parity bit, when present, follows the data bits. The start bit is a logical “0” and the stop bit
is a logical “1”. The start and stop bits are used as character framing bits.
v Printer Connector
Male DB9 or equivalent connector.
v Drive Capability
Max. 50 feet (15 m) for all supported data rates. The RS-422/A interface is effective up to 1200 m.
Figure 55. Mode IEEE 1284
Appendix B. Interfaces 161