Mettler Toledo IND131 Guia De Instalacion página 33

If using the J5 connector, before mounting the rear housing to a DIN rail, connect the open end of
the new display cable to J5 on the back of the rear housing as shown in Figure 2-17.
After the harness is connected, install the rear housing onto the DIN rail as shown in Figure 2-6 and
Figure 2-7.
If using the COM1 connector, connect the open end of the new display cable to the COM1serial
port.
2-10 METTLER TOLEDO IND131/IND131x/IND331/IND331xx Installation Manual
Display PCB
Chassis Ground
Note that terminal positions 1 and 2 are swapped in the wiring harness, while positions 3 and 4 are
wired pin-to-pin.
Figure 2-17: DIN Housing Showing Display Harness Connector
Table 2-1: Display Harness Wiring
Main PCB
1 2 (RxD)
2 1 (TxD)
3 3 (Gnd)
4 4 (+5V)
No connection
Shield
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