User Manual

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Connecting an RS-232 Serial Device to a PC
Switch Settings
Serial
Connection
SW1 SW2
RS-232
ON
OFF
RS-422
ON
ON
RS-485 4-wire
OFF
OFF
RS-485 2-wire
OFF
ON
Built-in 120 Ω
Terminator
SW3 SW4
Enable
ON
–
Disable
OFF
–
Ring mode
–
ON
Point to Point mode
–
OFF
NOTE
This switch setting is used for product revision 3.2 or later; for
previous revisions, refer to the label on the product's rear panel
for the correct information.
The S1 DIP Switch is located inside the TCF-142. When the TCF-142 is
in RS-485 mode, use this DIP switch to configure RS-485 data direction
control, data format, and baudrate. When the TCF-142 is in RS-
232/422 mode, the S1 DIP switch cannot affect RS-232/422
communication.
RS-485 Data Direction Control Settings
RS-485 Data Direction Control
S1 Pin 1
Auto Baudrate
OFF
Fixed Baudrate
ON