Dataforth SCM9B-D192 Series User Manual - Page 7

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Dataforth SCM9B-D192 Series User Manual
7 SCM9B-D192 USERS MANUAL
FACTORY RS-485 TERMINATION SETTINGS
Each SCM9B-D192 contains internal pin strips for enabling the internal
termination and biasing resistors. Each pc board is clearly marked with the
jumper designators adjacent to each row of pins. The jumper designators
are +1K, 220 and -1K. To enable any resistor, place a jumper over the
pins next to the required designator. The factory switch and jumper
settings are outlined below.
S C M 9 B - D 1 9 2 :
Baud Rate: 300 baud switch up.
RS-485 (J3):
Isolated RS-485 (J2):
Biasing Resistors: +1K, -1K jumpers installed.
Termination Resistor: 220 jumper installed.
Biasing Resistors: +1K, -1K jumpers installed.
Termination Resistor: 220 jumper not installed.