Technical specification of RS232 and RS485 bus:
RS232 and RS485 interface
Max. operating RS232 bus current
Max. number of devices on RS485 bus
Max. output current on RS485 bus
Max. data rate
Max. total cable length (300 Bd, 200 nF/km)
Table 20: Technical specification of RS232 and RS485
Figure 33: Connection of jumpers
33
SmartFlex SR309
15 mA
32
60 mA
230400 bps on RS232
230400 bps on RS485
RS232 20 m, RS485 1200 m