GE Reason RT430 Technical Manual page 101

Application Example 3 - Connecting the Serial Port
The Application Example 3, shown in
and RS485 levels, used to synchronize a PLC and two relays, respectively.
Figure 48: Application Example 3 - Connecting the Serial Port at Level RS232
Figure 49: Application Example 3 - Connecting the Serial Port at Level RS485
RT430-TM-EN-5
Figure 48 and Figure 49 , illustrates the serial port connections RS232
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