Appendix
D
Communication connections
Figures 7 through
provide information on the
connections used to establish and maintain
communication between the PTC-870IM and other
devices.
Figure 7. IBM PC/AT-to-PTC cable, P/N 12705-1X5
IBM PC/AT PTC-870IM
RXD 2 2 TXD
TXD 3 3 RXD
DSR 6 4 RTS
DTR 4 5 CTS
RTS 7 6 DSR
GND 5 7 DIGND
N.C. 8 CD
N.C. 9 DS0
CTS 8 10 DTR
N.C. 11 RI
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