Lenze I/O system 1000 System Manual - Manual (Page 228)

Product description
I/O compound modules − communication
RS485 interface − EPM−S650
3
l
228 EDSIO1000 EN 7.0
Parameterisable idle level:
For a connection with minimum reflections and the open circuit detection in RS422/485
operation, the cables can be pre−assigned via parameters with a defined idle level.
The receiver is connected as follows:
Parameter Description Receiver connection
None No pre−assignment of the receive
path. This setting is only advisable
for special drivers that are provided
with a bus capability.
Signal R(A) 5 V (open circuit detection)
Signal R(B) 0 V If this pre−assignment is set, open
circuit detection is possible in full
duplex operation (RS422).
Signal R(A) 0 V
Signal R(B) 5 V This pre−assignment corresponds to
the idle state (no transmitter active)
in half duplex operation under
RS485. Open circuit detection is not
possible.
Technical data
EPM−S650: Rated data
Module identifier 2625
dec
Current consumption/power loss
Current consumption from backplane bus 100 mA
Current consumption from load voltage L+ 10 mA (without load)
Power loss 1 W
Status, alarm, diagnostics
Status display Yes
Alarms Yes, parameterisable
Process alarm No
Diagnostic alarm Yes, parameterisable
Diagnostic function Yes, parameterisable
Diagnostic information can be read out Possible
Module status Green LED
Module error display Red LED
Channel error display Red LED
Communication
Interface RS422 and RS485
Electrical isolation To the backplane bus
PtP communication Yes
20 mA / TTY No
Transmission speed 150 bps ... 115.2 kbps
Cable length, max. 1200 m