SATEC RSC232 - Manual (Page 9)

7
4. Multi-drop Operation Mode
More than two devices (up to 10 for RS-422 or up to 32 for RS-485) can be
linked together to communicate with one another through several converters
or through one converter and several RS-422/RS-485 ports of any other slave
devices.
4-wire Full Duplex - RS422
Converter #1 Port RS-422
SW1
1 2
ON
OFF
2-wire Half Duplex - RS485
Converter #1 Port RS-485
SW1
1 2
ON
OFF
NOTE: Make sure to set SW3 correctly (automatic or non-automatic RTS)
+TX
+RX
-TX
-RX
+RX
+TX
-RX
-TX
+RX
+TX
-RX
-TX
DTE RS-232
+TX
+RX
-TX
-RX
+RX
+TX
-RX
-TX
+RX
+TX
-RX
-TX
DTE RS-232