Wiring serial data interfaces
The maximum data transmission rate for the serial interface depends on the length of
cable and on the type of interface. Observe the following recommendations:
Table 11: Serial interfaces: data transmission rates and recommended max. cable lengths
Interface
Data transmission rate
Distance to the target computer
(host)
RS-232
Up to 19.2 kBd
38.4 kBd ... 57.6 kBd
115.2 kBd … 500 kBd
Max. 15 m
Max. 5 m
< 2 m
RS-422
1)
Up to 38.4 kBd
38.4 kBd ... 57.6 kBd
57.6 kBd … 500 kBd
Max. 1,200 m
Max. 500 m
Max. 10 m
1)
For RS-422-compatible cable and corresponding cable termination as per specification
NOTICE
Risk of damage to the internal interface modules!
If the serial data interfaces are wired incorrectly, then electronic components in the
device could get damaged.
■
Observe the information on wiring.
■
Carefully check the wiring prior to switching on the device.
RS-232
!
"
§
Device
1
Host
TxD
RxD
GND
RxD
TxD
GND
RS-422
$
%
&
/
(
Device
1
Host
RD+
TD+
RD‒
TD‒
GND
TD+
RD+
TD‒
RD‒
GND
Figure 18: Wiring of the serial data interfaces RS-232 and RS-422
1
Device
!
...
§
Pin assignment: see RS-232 pin assignment for the respective device
$
...
(
Pin assignment: see RS-422 pin assignment for the respective device
NOTE
Activate the serial data interface type in the device using a configuration tool, e.g. the
SOPAS ET configuration software.
ELECTRICAL INSTALLATION
6
8024289//2019-08-15 | SICK
O P E R A T I N G I N S T R U C T I O N S | GLS6
35
Subject to change without notice
