Matrix-orbital LK202-25 Legacy Manual de usuario descargar pdf (Pagina 16)

Table 7: Connector Pinout

Pin 1 +5.0 VDC (+7 to +15 VDC with wide voltage option)

Pin 2 Rx (receive data)

Pin 3 Tx (transmit data)

Pin 4 Ground

2.2.3 I

C Communications

The display’s I

C communications runs at 100 Kbps and supports up to 127 units on a single commu-

nications line. The I

C data line operates on 5 volt CMOS levels. One modiﬁcation is required for I

communication. Please see ﬁgure below for appropriate modiﬁcation. The jumps must be removed from the

RS232 selection and placed on the I2C selection.

Figure 14: I2C Select

For I

C communication, a connection must be made via the 4 pin connector as per the ﬁgure and table

below.

1 2 3 4 12 34

Figure 15: Power Connector

Matrix Orbital LK202-25 12

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 49 50

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