turck BL20 Series - Page 411

409
2020/09
Transmission channels RxD, TxD
Data buffer
Receive buffer? 128 byte
Transmit buffer 64 byte
RS422 connection type Two wire simplex
or
Four wire full-duplex
RS485 connection type Two wire half-duplex
transmission rate Max. 115200 Bit/s (parameterizable)
RS485/422 cable length Max. 30 m
Cable impedance 120 
Bus terminating resistors 120  (external)
Isolation voltage
U
TMB
(module bus/ field voltage/ RS485)
Max. 500 V
eff
U
field
(field voltage/ RS485)
Max. 500 V
eff
Technical data