KSB BACnet MS/TP, Supplementary Operating Manual

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3 Description
8 of 16
BACnet MS/TP Gateway
4 BACnet parameter DIL switch
5 Back-up battery
3.3.1 Setting jumpers
Only jumper 1 (BACnet MS/TP bus terminator) typically must be set, if required,
during commissioning.
3.3.2 DIL switch
Fig. 3:
DIL switch 4
DIP switches 1 to 7 code the master node address, and DIP switches 8 to 10 code the
baud rate in the BACnet MS/TP network.
The values are binary coded from right to left.
Table 3: DIP switches for master node addressing
DIP switches Master node address
1 2 3 4 5 6 7
0 0 0 0 0 0 1 1
0 0 0 0 0 1 0 2
0 0 0 0 1 0 0 4
0 0 0 1 0 0 0 8
0 0 1 0 0 0 0 16
0 1 0 0 0 0 0 32
1 0 0 0 0 0 0 64
The master node address can be set from 1 to 127 using the DIP switches. It may be
necessary to activate several switches to obtain the required address.
NOTE
Master node address 0 is invalid and deletes the current configuration on the
gateway.
Table 4: DIP switches for setting the baud rate
DIP switches Baud rate
8 9 10
0 0 0 4800
0 0 1 9600
0 1 0 19200
0 1 1 38400
1 0 0 56700
1 0 1 76800
1 1 0 115200
1 1 1 230400
The baud rate for the BACnet MS/TP network is set to 38400 by default.
3.3.3 Back-up battery
Insert battery of type CR2032 with the positive terminal pointing upwards. The
battery buffers the data and the real-time clock of the gateway during a power
interruption.