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Installing UltraKey Lite with MAXPRO-Net
RS422 Connections Using a Converter and the Terminal Box
1. Select the applicable adapter plug and insert it into the AC adapter. Push to click it
into place. See Figure 4-6.
2. Connect an RJ45 network cable from the RJ45 port on the terminal box to the
controller serial port.
3. Connect an RS422 cable from the RS422 terminal plug pins on the terminal box to an
RS422 to RS232 converter (supplied by the installer or customer).
4. Connect the RS422 to RS232 converter to the MAXPRO-Net RS232 port. See
Figure 4-8.
Figure 4-8 RS422 to RS232 Converter Using the Terminal Box (RS422)
MAXPRO-Net
RS422 to RS232
converter
Serial Port (RS422)
Terminal Box
RJ45 network cable
RS232
Ethernet Port
RS422 COM1
Controller
Table 4-2 Terminal Box COM1 and COM2 Pin Assignments
Location Serial Port Type Pin Signal
DB9 Port COM2 RS232 2 TXD
3RXD
5GND
Terminal Plug COM1 RS422 1 TX+
2TX –
3RX+
4RX –
5GND
RS485 1 TX+
2TX –
COM2 RS232 6 GND
7TXD
8RXD
RS485 3 RX+
4RX –