Com3 mode selection switches on rtm (sw5~sw8), Table 4-15: com3 mode selection switch settings – ADLINK CT-31 User Manual

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Board Interfaces

COM3 Mode Selection Switches on RTM (SW5~SW8)

These switches on the RTM set COM3 to RS-232 full modem,
RS-422, RS-485, or RS-485+ half-duplex mode. RS-232 full
modem is set by default. See “cPCI-R3610T RTM Board Lay-
out” on page 22 for
switch locations.

Table 4-15: 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

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