SmartFlex SR305
State indication of the interface:
Description of indication
ETH2 – green LED
On
Off
Selected 100 Mbps
Selected 10 Mbps
ETH2 – Yellow LED
On
Blinking
Off
The network cable is connected
Data transmission
The network cable is not connected
RS485, RS232 – green LED
Indicates Receive data
RS485, RS232 – yellow LED
Indicates Transmit data
Table 27: State indication of the RS232-RS485-ETH interface
Technical specification of RS232, RS485 bus and Ethernet IEEE 802.3:
ETH2, RS485 and RS232 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
100 Mbps on ETH2
Max. total cable length (300 Bd, 200 nF/km)
RS232 20 m
RS485 1200 m
ETH2 100 m
Table 28: Technical specification of RS232, RS485 and Ethernet
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