Data Sheet for Product

13
Siemens
A6V11276159_en--_c
Smart Infrastructure
2020-09-25
Interfaces
On-board RS-485 (Modbus RTU)
A+, B-, REF(T1)
RS-485 (EIA-485)
Modbus RTU or BACnet MS/TP
1)
mode
Bus connection
A+, B-, REF
Bus electronics
Galvanically isolated
Bus cable
Shielded if length > 3 m, twisted pair
Bus polarization
Configurable by software
2)
Bus termination
None
3)
Baud rate
Max. 57,600
1) BACnet MS/TP
2) Climatix POL46X controllers offer software configurable polarization at the RS485 port. Bus polarization can be
enabled or disabled.
3) On a RS485 network, use termination resistors that match the cable’s characteristic impedance to prevent
signal echoes from corrupting the data on the line.
Extension interface (RS-485)
A+, B- (T6)
RS-485 (EIA-485)
Extension IO modules
Bus connection
A+, B-
Bus electronics
Not galvanically isolated
Bus cable
Shielded if length > 3 m, twisted pair; total length < 30
m
Bus termination
None*
Extension IO modules limitation
1
Baud rate
Fixed, default with Extension IO**
Power consumption
External power for Extension IO
* Configure using the extension modules’ DIP switch as needed.
** The default baud rate and protocol is 38400, E, 8, 1.
Tools/HMI
Local service interface
(T-HI)
Cable connection
RJ45 jack, 8 pins, length < 3 m
Local-HMI
RS-485 (EIA-485)
NOT galvanically isolated
Supply voltage
DC 24 V, Max. 80 mA
(short circuit protected)