SmartFlex SR310
Figure 44: Connection of jumpers
Technical specification of RS232 and RS485 bus:
RS232 and RS485 interface
Max. operating RS232 bus current
15 mA
Max. number of devices on RS485 bus
32
Max. output current on RS485 bus
60 mA
Max. data rate
230400 bps on RS232
230400 bps on RS485
Max. total cable length (300 Bd, 200 nF/km)
RS232 20 m, RS485 1200 m
Table 23: Technical specification of RS232 and RS485
The termination resistor can be activated directly on the port board using a jumper (termination
resistor is part of the port board).
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