User's Manual Part 2

Tally Dascom 2600/2610/PRN-7
7.3.4 Optional Serial Interface RS232C
Your printer’s serial interface supports the RS232C specification. The signals are
received and transmitted by a 9 pin connector.
Basically 3 lines are enough for exchanging information between computer and printer
(one receive line, one send line, one line for common grounding).
Type
RS232C interface
Synchronization
Asynchronous
Transmission rate
600 Baud to 19200 Baud
Signal status
OFF (log.1) -3 V to -15 V
ON (log. 0) +3 V to +15 V
Connection cable
up to 15 m length
Interface connections
ITT Cannon connector, series DB-9 S
Transmission protocol
XON/XOFF, ENQ/STX, READY/ BUSY,
Robust XON/XOFF, ETX/ ACK, ACK/NAK
Capacity of data buffer
512Byte min. 256KByte max
Connector assignment
Connector no.
Direction Printer–PC
Signal
3
ė
TxD
4
ė
DTR
2
ĕ
RxD
6
ĕ
DSR
7
ė
RTS
8
ĕ
CTS
5

Signal Ground SG
Shield

Frame Ground FG
101