Matrix Orbital VFD2041 Legacy - Manual (Page 10)

2.2.1 DB-9 Connections
A standard DB-9F is provided for RS-232 communications. Power may also be supplied via this con-
nector if desired.
Figure 9: RS-232 Power Connector
Table 3: RS-232 Pinout
Pin Number Direction Description VFD Host
2 Data from VFD Data out (VFD) Tx Rx
3 Data to VFD Data in (VFD) 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.
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