turck BL20 Series - 12.3.3 Technical data

395
2020/09
12.3.3 Technical data
Fig. 276: Block Diagram
Technical Data
Designation BL20-1RS232
Number of channels 1
pPower supply vie module bus
Voltage from module bus U
MB
5 VDC
Voltage range 4.75…5.25 VDC
Field supply 24 DC
Voltage range 18…30 VDC
Nominal current from supply terminal I
L
0 mA
Nominal current from module bus I
MB
 140 mA
memory 128 byte receive buffer
64 byte transmit buffer
In-/outputs
Transmission level active (U
RS1
) -15…-3 VDC
Transmission level inactive (U
RS0
) 3…15 VDC
Transmission channels 2 (1/1) TxD and RxD, full duplex
transmission rate 300…115200 Baud (parameterizable)
Data, Parity, Stop (default: 9600 baud, 7 bit, impair, 2
stop-bits)
RS232 cable length Max. 15 m
Data flow control Software handshake
(Xon/ Xoff)
Hardware handshake
(RTS/ CTS)
module
bus
interface
module bus
DC
DC
micro
controller
RS232
interface
RTS
CTS
RxD
TxD
GND
FE
SHLD