Ampro Corporation 486E - Manual (Page 31)

Product Reference
2–15
Configuring Serial 2 for RS-485 (J6, W5, W6)
Serial 2 provides circuitry for both an RS-232C and RS-485 interface. The port can be configured to
support either interface using jumpers. The RS-232C interface appears on J11. The RS-485
interface appears on the two-pin connector, J6. Table 2–10 shows the pinout for J6. Table 2–11
shows the manufacturer’s part number for mating connectors to J6.
Table 2–10. RS-485 Serial Port 2 Connector (J6)
Pin Signal Name
1 +I/O
2 -I/O
Table 2–11. J6 Mating Connector
Connector Type Mating Connector
Discrete Wire
(Locking Connector)
MOLEX Housing 22-01-2027
Pin 08-55-0102
Figure 2–6 shows how to set W5 to select the output interface for Serial 2.
Figure 2–6. Serial 2 Interface Selection
Note
The RS-485 and RS-232C interfaces share the same circuitry. If you
configure Serial 2 for RS-485, do not connect a serial device to J11.
Similarly, if you configure Serial 2 for RS-232C, do not connect
anything to J6.
RS-232 W5 RS-485