Siemens BACNET 125-5037 - Manual (Page 14)

Product Overview
4 Siemens Building Technologies, Inc.
Communication Wiring
The controller connects to the field panel by means of a Floor Level Network (FLN)
trunk. Communication wiring connects to the three screw terminals on the controller
labeled “+” (positive), “-“(negative), and “S” (Shield) (Figure 3).
FLN TRUNK
+ -
(SHIELD) (SHIELD)
(+) (+)
(-)
(-)
TEC05XXR1
TEC0516R2
Wirenut
120 ohm
½ W
120 ohm
½ W
Note: = System Common
e to earth
Terminator
3-Wire Network Interface
+ - + - + -
NOTE: When wiring a 3-wire system to a 2-wire system see
the Wiring Guidelines Manual (125-3002) for detailed information.
Figure 3. Communication Wiring (2-wire). Figure 4. Communication Wiring (3-wire).
Controller LED Indicators
The controller has seven Light Emitting Diode (LED) indicators (see Figure 1).
Table 2. Controller LEDs.
LED Type Label
(if present)*
LED
Number
Indication
DO LED 3 - LED 6 3 - 6 Indicates the ON/OFF status of the DO
associated with it. A glowing LED indicates that
the DO is energized.
Transmit TX 0 Indicates, when flashing, that the controller is
transmitting information to the field panel.
Receive RX 1 Indicates, when flashing, that the controller is
receiving information from the field panel.
BST
”Basic Sanity Test”
BST 2 Indicates, when flashing ON and OFF once per
second, that the controller is functioning
properly.
* Some LED labels and numerals may be hidden by the controller cover.
Temperature Sensors
Room Temperature Sensor
The controller room temperature sensor connects to the controller by means of a
cable terminated at both ends with a six-conductor RJ-11 plug-in connector.