Switch Settings - Mettler Toledo IND780 Guide D'installation

Some examples of connecting external equipment are shown in Figure 2-34.
2.6.1.3.3. RS-485 Transmission Line Termination
The RS-485 network should include a terminating resistor, installed between the two lines at or on
the last node. The terminating resistor should match the characteristic impedance of the
transmission line, approximately 120 ohms. This terminating resistor is required when connecting
ARM100 modules to the port.
2.6.2.

Switch Settings

Two switches are located on the main PCB in the positions indicated in Figure 2-35. These
switches' functions are explained in Table 2-4.
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Pin Signal Function
8 +12V +12V Out, <0.5 A
Figure 2-34: COM2 Wiring for External Equipment
S2
S1
Figure 2-35: Main PCB Switch Locations
Notes
METTLER TOLEDO IND780 Installation Guide
2-21