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1 ~ 8
N.C (not connected)
9
R D
10
T D
11
DTR
12
PE
13
FAULT
14
RESET
1) I/O Signals into Printer (RS -232C)
T D
(TRANSMIT DATA)
Serial transmit data signals.
R D
(RECEIVE DATA)
Serial received data signals.
DTR
(DATA TERMINAL READY)
When this signal is in Ready (space), send data or a command.
If sending takes place in Busy (mark), overrun error is occurred.
Even in printing, data can be sent into the input buffer. If this signal is in Ready.
Further, Busy takes place also on supply of power, in test printing, on-line status or on occurrence of
resetting.
15
GND
16
FG
17
+5V(for circuit)
18
GND
19
+5V(for mechanism)
20
GND
27
CBM-920 User's Manual
CITIZEN
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