User manual

Chapter 2 Hardware Installation Page 21
Interface Definition
The R2 Extender currently provides two interfaces at the bottom, which are PoE & Data with a black
plastic cover and RS-232 with a light gray cover that labed “WARNING! No PoE”. Among which, a
black RJ45 waterproof connector will be provided for the PoE + Data interface.
Figure 9 Interface Definition
RS-232
RS-232, which is labeled COM/RESET, is used for debugging purposes as well as for hard reset of the
R2 Extender. Below you may find the pin definition of the RS-232.
Table 1 PIN Definition
Pin Assignment Name Description
P1 TXD0 Data Transmit 0
P2 DSR0 Data Set Ready 0
P3 RXD0 Data Receive 0
P4 TXD1 Data Transmit 1
P5 RXD1 Data Receive 1
P6 DTR1 Data Terminal Ready
P7 Hard Reset Hard reset the unit
P8 GND Ground
To reset the device, short P7 (Hard Reset) to P8 (GND) for less than 1 second and the system will
reset. If P7 (Hard Reset) is shorted to P8 (GND) for over 5 seconds, the R2 Extender will be reset to
the factory default settings.