56  M-Class 
 
5.1.6 Communications  
 
SERIAL PORT A  
Controls the communications settings for Serial Port A. 
 
BAUD RATE 
 
Determines the serial communication rate.  
 
38400 
38400 bits per second 
28800 
28800 bits per second 
19200 
19200 bits per second 
9600 
 9600 bits per second 
4800 
 4800 bits per second 
2400 
 2400 bits per second 
1200 
 1200 bits per second 
PROTOCOL 
Sets the data flow control (handshaking) method.  
 
BOTH 
Uses both handshaking methods. 
SOFTWARE 
XON/XOFF 
HARDWARE 
CTS/DTR 
NONE 
No flow control is used. 
PARITY 
 
Sets Word parity  
 
NONE 
No parity  
ODD 
Odd parity 
EVEN 
Even parity 
DATA BITS 
 
Sets Word length  
 
7 
Seven bit Word length 
8 
Eight bit Word length 
STOP BITS 
 
Sets the number of stop bits  
 
1 
One stop bit  
2 
Two stop bits 
 
PARALLEL PORT A 
Controls the communications settings for Parallel Port A. 
 
PORT DIRECTION 
Determines if data is sent from the printer to the host via the parallel port.   
 
UNI-DIRECTIONAL 
One-way printer communication. 
BI-DIRECTIONAL 
Enables IEEE 1284 back-channel operation.