TallyGenicom MATRIX PRINTER 2150 Reference Manual page 186

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Serial interface
Type
Synchronization
Transmission rate
Signal status
Connection cable
Interface connections
Transmission protocol
Capacity of data buffer
RS232C interface
Asynchronous
600 bauds to 19,200 bauds
OFF = Mark = log. 1 = -3 V to -15 V
ON = Space = log. 0 = +3 V to +15 V
Length up to 15 m
ITT Cannon connector, series DB-25 S
XON/XOFF, ENQ/STX, READY/BUSY,
Robust XON/XOFF, ACK/NAK, ETX/ACK
64 KB max.
Specification
?
QUIT
176