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5.4.2
Connector pin assignment
Connector (cable side):
D-subminiature Cannon or Cinch DB-9 plug or an equivalent connector that conforms to EIA standards
Figure 5.11 shows the serial interface connector.
Signal definition:
Table 5.3 lists RS-232C interface signals and their functions.
Pin
Signal name
number
1
RTS
2
TD
3
RD
4
DSR
5
SG
6, 8
DTR
Notes:
1. The space state corresponds to the high level of the interface signal.
2. The direction (output or input) is viewed from the printer side.
5-14
1
6
9
Figure 5.11 Serial interface connector
Table 5.3 RS-232C interface signals
Direction
Output
Request to Send
Space state when the printer is ready to transmit data
Output
Transmitting Data
Input
Receiving Data
Input
Data Set Ready
The printer can receive or transmit data when this signal is in the
space state.
Signal Ground (common return)
Output
Data Terminal Ready
Space state when the printer is ready to receive or transmit data
(Cable side)
5
(Male type)
Description
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