Matrix-orbital GLC24064 Manuel d'utilisateur télécharger pdf (Page 14)

Figure 12: Power Jumper DB-9

2.2 Communications

2.2.1 RS-232 Communications and DB-9 Connector pinout

A standard DB-9F is provided for RS-232 communications. Power may also be supplied via this con-

nector if desired. In addition, the user may use the two middle pins of the power connector for serial

communications. The RS-232 connector on the serial cable is wired so that a standard ’straight through’, 9

pin D-sub cable may be used to connect the modules to a standard serial port such as COM ports on PCs.

Note that this device complies with the EIA232 standard in that it uses signal levels from ±12V to ±12V. It

can also operate correctly at TTL (0 to +5V) levels. To use standard RS-232 no modiﬁcations are required.

For TTL, please refer to the Table below.

Figure 13: RS-232 Pinout

Matrix Orbital GLC24064 10

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 43 44

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Matrix-orbital GLC24064 Manuel d'utilisateur Page 14