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Mounting and Installation
scanCONTROL 29xx
5.2.3
RS422, Synchronization
Connector
pin assignment
The scanCONTROL 29xx sensor has a RS422 port according to EIA standards, which can be parameterized
as input or output via software.
The RS422 port can be used to synchronize several sensors with each other, triggering or measurement
value output (for example Modbus).
The internal terminating resistor (termination R
T
= 120 Ohm
) can be activated or switched off via
software. The signals must be operated symmetrically, according to the RS422 standard, i.e. preferably with
RS422 driver circuits or converters. Alternatively use devices with RS422 connectors, e.g. sensors or PLC‘s.
The RS422 port is galvanically isolated from GND and Laser on/off, but not from GND-In1 ... 3. When used
one of the GND-In1 ... 3 should connected to the GND of the remote station in order to avoid potential differ-
ences.
Sync+
Sync-
IN/OUT
Tx
Rx
ISOLA
TION
GND
RT = 120 Ohm
RT On/Off
(Software)
Fig. 18 RS422 synchronization internal circuity
scanCONTROL 29xx
supports Power over
Ethernet. If the sen-
sor is connected to
a network adapter/
switch that is capable
of POE and if you also
use the power supply
of the multifunction
port, these two power
supplies have to be
galvanically isolated.
