16
G
Mounting and Installation
THERMASGARD
®
911x
ON
ON
1
1
8
8
Rx
Tx
0V
Supply voltage
+10...+24V DC
RS485 Bus termination
Bus
address
Bus parameters
(Baud rate,
data bits …)
RS485 Bus
Connections
Power supply and bus line are pluggable. All other connections are screw terminals.
Power supply: ....................2-pole COMBICO plug connection
Bus connection: ................2-pole COMBICO plug connection
I ⁄ O connections: ...............Screw terminals designed for strands up to 2,5 mm
2
Power supply LED
The power supply LED is located at the front side of the device at the bottom left.
The green LED [Rx] signalises the presence of power supply.
Communication LED
The communication LEDs are located at the front side of the device at the top left.
The green LED [Rx] signalises data traffic on the bus line (arriving data).
The red LED [Tx] signalises that field bus device is sending data to the bus line.
ON
ON
1
1
8
8
Rx
Tx
0V
Versorgung
+10...+24V DC
RS485 Busabschluss
Bus-
adresse
Busparameter
(Baudrate,
Datenbits,..)
RS485-Bus
Configuration
The position of DIP switches is at the top, centred.
The bus termination is located between bus connector and DIP switches.
RS485 BUS TERMINATION
The terminating resistor for bus termination is already built-in in the device and
can be activated via jumper as needed.
Bus termination
Bus termination
open
closed
(activated)
Busabschluss
offen
Busabschluss
geschlossen
(aktiviert)
Busabschluss
offen
Busabschluss
geschlossen
(aktiviert)
BUS PROTOCOL
The bus protocol can be selected at the left DIP switch (position 8).
ON
ON
1
1
8
8
Rx
Tx
0V
Versorgung
+10...+24V DC
RS485 Busabschluss
Bus-
adresse
Busparameter
(Baudrate,
Datenbits,..)
RS485-Bus
ON
ON
1
1
8
8
Rx
Tx
0V
Versorgung
+10...+24V DC
RS485 Busabschluss
Bus-
adresse
Busparameter
(Baudrate,
Datenbits,..)
RS485-Bus
DIP switches, left:
Bus protocol
DIP 1 DIP 2 DIP 3 DIP 4 DIP 5 DIP 6 DIP 7
DIP 8
Protocol
x x
x
x
x
x
x
ON SAIA
®
S-Bus
x x
x
x
x
x
x
OFF
Modbus RTU
