Matrix-orbital GLC24064 Manual de usuario descargar pdf (Pagina 16)

2.2.3 I

C Communications

The display has I

C communications running at 100 Kbps and up to 127 units can exist on a single

communications line. The display I

C communication lines are the two middle pins of the power connector.

These are shared with RS-232 and must be turned on. The default I

C address is 0x50. The I

C data line

operates on 5 volts.

Figure 16: Power Connector

Table 6: Connector Pinout

Pin 4 Ground

Pin 3 SDA (I

C data)

Pin 2 SCL (I

C clock)

Pin 1 Vdc

The display does not work on I

C by default. The modiﬁcation shown in the Figure below must be

carried out.

Figure 17: I

C communication runs at 100 Kbps and supports up to 127 units on a single communications line. The

C data line operates on 5V CMOS levels.

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Matrix-orbital GLC24064 Manual de usuario Pagina 16