Matrix Orbital LCD2041 Legacy - Manual (Page 10)

Figure 9: RS-232 and Power Connector
Table 3: RS-232 Pinout
Pin Number Direction Description LCD Host
2 Data from LCD Data out (LCD Tx Rx
3 Data to LCD Data in (LCD) Rx Tx
5 - Ground gnd gnd
2.2.2 Alternate Serial Connection
An optional alternate connection header is provided to allow one cable for data and power. Two jumpers
will have to be set into the RS-232 position above the DB-9 connector.
Figure 10: RS232 Configuration
Connector pinout is as follows;
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