Manual
Unit
6.3.2 RS232
May be used for data transfer in ASCII or protocol format. The RS232 interface is activated by a bridge
in the RS232 connection cable.
Connector:
ST4 – 9 pin Sub-D male
Connection cable:
9 pin
9 pin
female sub-D
female sub-D
SCU 800
PC
Interface configuration:
9600 Baud, 8 Bit, No Parity, 1 Stop Bit
Note
: Pins 1 and 9 must be bridged on the SCU 800 end of the connection cable
to activate the RS232 interface.
6.3.3 RS485
Data transfer only in protocol format. The RS485 interface is always active if the RS232 cable is not
connected.
Connectors:
The terminals are doubled up so that the signals can be looped through
.
Terminal designation
Terminal
COM
+
KL11
–
KL12
+
KL13
–
KL14
Interface configuration:
Depends on the protocol in use(
protocol manual).
Baud rate
1
S1-1
S1-2
1200
ON
ON
2400
OFF
ON
4800
ON
OFF
9600
2
OFF
OFF
2
Default setting
1
The following rules apply for the baud rate setting:
Power up SCU:
Baud rate is read from the EEPROM
Move S1:
Changing the baud rate with S1 is only possible while the SCU 800 is
switched on. Changes are saved in the EEPROM.
Changing the position of S1 while the SCU 800 is switched off has no effect
on the baud rate setting.
Page 34/44
LISTEC GmbH
60T023-04 / 30.04.2014
TX
RX
RX
TX
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
GND
