Matrix Orbital PK202-25 - Manual (Page 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 2 C Communications
The display I 2 C communications runs at 100 Kbps and supports up to 127 units on a single communi-
cations line. The I 2 C data line operates on 5 volt CMOS levels. One modification is required for I2C. The
RS232 jumper selection must be removed and placed on the I2C jumper selection. Please see figure below
for appropriate modification:
Figure 14: I2C Select
For I 2 C communication, a connection must be made via the 4 pin connector as per the figure and table
below:
1 2 3 4 1 2 3 4
Figure 15: Power Connector
Matrix Orbital PK202-25 12