2 Setup
CPSN-MCB271-S1-041 Reference Manual (Hardware)
27
RS-232C (COM)
When using an RS-232C interface, different cables may be required depending on the types of device to
which you are connecting (computer or modem, etc.). Check the requirements of the external device and
select either a straight-through or crossed (null modem) cable as appropriate. If special treatment of the
signal lines in the connector is required, ensure that this is done in accordance with the specifications.
Figure 2.27. Example connection to a modem
Figure 2.28. Example connection to a PC
Figure 2.29. Example connection to a device
