Xerox 4520mp manual RS-422A Serial Interface Ccitt

C a b l e S p e c i f i c a t i o n s

RS-422A Serial

Interface (CCITT

V.11 and X.27)

The RS-422A Serial Interface is hardware compatible with the EIA RS-422 standard which defines the interconnect of Data Terminal Equipment (DTE) and Data Communication Equipment (DCE).

Data Rates

The user may select line speeds of 300, 600, 1200, 2400, 4800, 9600, 19200 and 38400 baud. Default setting is for 9600 baud.

Encoding

Asynchronous communication in the printers supports 7 or

8-bit ASCII data. The string of data bits is encapsulated by 1 Start bit, 1 or 2 Stop bits and may have an appended Parity bit. Parity (even, odd or none), the number of stop bits and 7 or 8 bit data are selectable from the front panel UI. Default

settings are for 8 bit data with 1 stop bit and parity none.

Protocols

XON/XOFF provides the software handshaking on the RS-422 interface. Robust XON/XOFF is the default.

Connections

The connector for the RS-422A interface is the 25 pin “D” Shell type. The use of short cables for interconnect is recommended. Cable length has been certified at 4 feet.

A-10❖ 4 5 2 0 / 4 5 2 0 m p U s e r ’ s G u i d e