Advantech B+B SmartWorx 232BSS4, Руководство пользователя

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22 Documentation Number 232BSS4-2916m
Master Port Connections:
The Master Port of the 232BSS4 is a 25 pin female D-sub connector
configured as a DCE. This provides direct connection to an IBM PC
compatible or other DTE device. When connecting the Master port to a
modem, the Master port of another 232BSS4, or other device configured as
a DCE, a null modem adapter such as B&B’s model 232DTE is needed. If
the user chooses to use the DTR signal to tell the 232BSS4 when to accept
commands, the DTR output from the Master device should be connected to
pin 20.
See Appendix B for a complete set of connection tables to the 232BSS4
ports.
Slave Port Connections:
The Slave Ports of the 232BSS4 are 9-pin, D-sub connectors configured
as DTE for direct connection to a modem or other DCE device. When
connecting the Slave ports to a PC compatible or other DTE device, a null
modem adapter is needed.
See Appendix B for a complete set of connection tables to the 232BSS4
ports.