Installation Of Calec ® St: Electrical Connection; Calec ® St Bacnet Ms/Tp Information; Line Termination And Bias Resistor; Commissioning Of Calec - aqua metro CALEC ST Instructions De Montage Et D'utilisation

Installation of CALEC
For using the BACnet MS/TP interface, please connect the RS 485 cable to connection 90 (a +) and 91 (b -). These connections are below
the calculation module of CALEC
®
CALEC ST BACnet MS/TP information

Line termination and bias resistor

An external termination resistor must be connected to each end of the two segments. The BACnet MS/TP specification recommends a 120
Ohm resistor. The device has internal bias resistors (100 k).

Commissioning of CALEC

interface
After connecting the RS 485 to connection 90 and 91, following steps are necessary.
Step Action
1 Configuration of the CALEC
for application use
2 Configuration of the CALEC
for BACnet use
®
ST: electrical connection
® ST.
®
ST
® ST
BACnet
MS/TP
Print
®
ST with BACnet MS/TP
Description
The information are in the operating manual of CALEC
According to this appendix
®
ST
3