Sensoray 2453 - Manual (Page 6)

Left to right:
• Serial interfaces (see Table 1 for pinout);
• Ethernet;
• Configuration button;
• LED indicators: green (top) – power, red (bottom) – special function;
• Power (5 V DC, + on center).
Table 1. Serial interfaces terminal block pinout (left to right):
1 RS-232 TX
2 RS-232 RX
3 Ground
4 Ground
5 RS-422 RX+
6 RS-422 RX-
7 RS-422 TX+
8 RS-422 TX-
Note: for RS-485 connect B (+) line to contact 5 or 7; A (-) line – to contact 6 or 8.
6