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Moxa TCC-100/100I User's Guide
Hardware Installation
Installing TCC-100/100I involves five straightforward steps:
•
STEP 1: Set the DIP Switches
•
STEP 2: Attach the Power Supply
•
STEP 3: Wire the Terminal Block
•
STEP 4: Attach the RS-232 Converter
•
STEP 5: Test the Connection
The details of each of these five steps are described next.
STEP 1: Set the DIP Switches
The DIP Switches on TCC100/100I are used to set the signal transmission mode
and enable or disable the termination resistor. You can configure for either
RS-422 or RS-485 transmission mode. Your program and serial port should be set
to match the converter's settings.
SW1—Switch 1 selects RS-422 or RS-485 mode. The default is "On" for RS-422
mode.
SW2—Switch 2 selects 2-wire or 4-wire RS-485 mode. The default is "On" for
4-wire RS-485. Note that if Switch 1 is set to RS-422 mode, then Switch 2
is inactive.
SW3—Switch 3 enables the terminator to 120 Ohms. When enabled, the 120
Ohm resistor prevents signal reflection during RS-485 transmission. The
default is "On" to enable the terminator. If your particular application does
not require using the termination resistor, then simply set Switch 3 to the
off position to disable it.
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