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Serial Interface
Pin Name
Function
1
GND
Printer’schassisground.
2
TXD
Thispin carriesdatafromtheprinter.
3 RXD
ThisDincarriesdatato theminter.
41
RTS
I Thisuin isalwayssetspace.
I
ThispinisSpacewhenthecomputerisreadytosend
5
CTS
data.
Thisprinterdoesnotchwkthispin.
6
N)C
7 GND
I Signalground.
8-10
N/C
Thisprinterturn thispin Spacewhen it is ready to
11
RCH
receivedata.
Thislinecarriesthesamesignalaspin20.
12 N/C
13 GND
\ Signalground.
14-19
N/C
20 DTR
Thisprinterturnsthispin Spacewhenit is readyto
receivedata.
21-251 N/C I
157