Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manuale Utente Pagina 277

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Appendix C
C-4
Cable Length Requirements
Refer to Table C.C for information on the cable lengths that you can use
with the serial COMM1, COMM2, and COMM3 ports.
Table C.C
COMM1, COMM2, and COMM3 Maximum Cable Length
RS Communication Transmission Rate Maximum Cable Length
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Cable Configurations
See Figure C.3 for an example cable configuration.
Figure C.3
Cable for a 9ĆPin IBM PC/AT, T50, T60, or T47 Computer
to the Control Coprocessor 25ĆPin COMM1, 2, or 3 Port
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