User Manual

17
Siemens A6V10990076_en_c
Smart Infrastructure 2020-04-20
Interface Symbol/
Location
Use Technical data
Third-party bus T6, T14 Connect field devices
● e.g. variable speed drive, fan coil
controller
Touch panels
● via RS485
'Building automation system'
● Modbus RTU
● BACnet MS/TP (T6 only)
● Plug: 3-pin connection for all interfaces
● RS-485 (EIA-485) interface
● Galvanically separated (T6 only)
● Data rate: max. 600 Baud…115 kBaud (can be set
over software)
● Maximum connectable devices: Up to 31 devices
● Bus termination (can be set over software):
120 Ω + 1 nF (T6 only)
● Bus polarization (can be set over software):
680 Ω / 680 Ω
NOTICE! The baud rate must be adapted to match the
cable length.
NOTICE! If both interfaces are configured as RS485
slaves, they have the same slave address (system
property, see SAPRO help).
Peripheral bus Right side Extension inputs/outputs
● Connection of I/O modules
● Plug connection (see "Accessory [➙ 22]")
● Maximum number of I/O modules: 31
● Addresses 1…31, 0 not used
● Please note "Power data [➙ 9]".
NOTICE! Not internally fused. Use an external fuse at 4 A
in the power supply line.
Communication
s interface
Left side Extending communications and integration
● Connect communications modules
● Plug connection (see "Accessory [➙ 22]")
● Maximum number of communications modules: 2
● Voltage / current: DC 5 V / max. 670 mA
● Short-circuit proof
NOTICE
BACnet address conflict
BACnet IP and BACnet MS/TP must not be operated at the same time (they are mutually
exclusive). An address conflict could arise in the BACnet network.
Wire lengths
Interface Wire lengths
Ethernet Max. 100 m
Process bus ● Overall length: max. 1000 m
● Between 2 nodes: max. 700 m (as per KNX specification)
Peripheral bus ● Overall length: max. 30 m
● Voltage drop off on 0 V wire: ≤1.5 V
Third-party bus ● Overall length: max. 1000 m @ 9.6kBaud
● Max. 500 m @ 9.6kBaud between 2 nodes
● Total 40 m stub lines; 1 stub line max. 20 m
Service interface Max. 3 m
Signal wiring Max. 80 m
NOTICE! Restriction: X9…X11 on NTC10k, NTC100k: max. 30 m