Board Interfaces
45
cPCI-3620
COM3 Mode Selection Switches on RTM (SW5~SW8)
These switches on the RTM select COM3 to be RS-232 full
modem, RS-422, RS-485, or RS-485+ half-duplex mode.
RS-232 full modem is set by default. See “cPCI-R3610(T) RTM
Board Layout” on page 29 for switch locations.
Table 4-18: COM3 Mode Selection Switch Settings
Mode
Pin
SW5
SW6
SW7
SW8
RS-232
1
OFF
ON
ON
ON
2
OFF
OFF
OFF
OFF
3
OFF
ON
ON
OFF
4
OFF
OFF
OFF
OFF
RS-422
1
ON
OFF
OFF
OFF
2
OFF
ON
ON
ON
3
ON
OFF
OFF
OFF
4
OFF
ON
ON
OFF
RS-485
1
ON
OFF
OFF
OFF
2
OFF
ON
ON
OFF
3
ON
OFF
OFF
ON
4
OFF
ON
ON
OFF
RS-485+
1
OFF
OFF
OFF
OFF
2
ON
ON
ON
OFF
3
OFF
OFF
OFF
ON
4
ON
ON
ON
OFF
SW5
SW6
SW7
SW8
Summary of Contents for cPCI-3620 Series
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