3-2
3-2 System Configurations
1: 1 connection
3-2-1 1:1 Connection using RS-232C port
This configuration connects to an external device having an RS-232C interface via the RS-232C port.
The mode selection switch is set to “0” (zero).
External device
RS-232C
RS-485 port
Signal conversion
<Mode selection switch: “0”>
RS-232C port
General purpose device
General purpose device
None
CPU
Power
supply
RS1 or RS4
* With RS1, a D300win personal computer loader can be connected to an RS-485 port which is not used.
In this case, the mode selection switch needs to be set to “2.”
External device
RS-485
RS-232C
RS-485 port
Signal conversion
<Mode selection switch: “2”>
RS-232C port
General purpose device
None
Loader
CPU
Power
supply
RS1
For the connection, refer to “3-3-2 When
connecting to RS-485 port.”