Technical data

50 • BACnet/IP Controller 750-830
Hardware
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
3.1.3.3 Fieldbus Connection
The connection to the fieldbus is made via an RJ45 connector, which is also
called a "Western plug." Wiring for the RJ45 socket on the fieldbus controller
adheres to 100BaseTX specifications. It is mandatory to use a twisted pair ca-
ble of category 5 as a connecting cable. Cable types S-UTP (Screened Un-
shielded Twisted Pair) and STP (Shielded Twisted Pair) with a maximum
segment length of 100 m can be used.
Tab. 3-1: Plug-in Contacts
Contact Signal
1 TD + Transmit Data +
2 TD - Transmit Data -
3 RD + Receive Data +
4 not assigned
5 not assigned
6 RD - Receive Data -
7 not assigned
1
2
3
4
5
6
7
8
8 not assigned
The connection point is lowered for mounting into an 80 mm-high switchgear
cabinet after the connector attachment.
Attention:
The bus connection is approved only for use in LAN networks, not for the
connection of telecommunication lines!
In addition to BACnet/IP, the controller also supports the BACnet/PTP proto-
col. The controller can communicate, when connected to the RS232 interface,
with other PTP-capable devices through a modem connection (half router).
The SUB-D connector for the RS232 interface is wired as follows:
Tab. 3-2: Bus Connection and Connection Plug Arrangement for the RS232
Contact Signal Description
1 - - Not used
2 RxD Receive Data Receive signal
3 TxD Transmit Data Transmit signal
4 - - Not used
5 GND Ground Signal and supply ground
6 - - Not used
7 RTS Request to send
Request to send; logical Zero
= ready for data receipt
8 CTS Clear to send
Send readiness; logical Zero
= ready for sending data
1
6
7
8
9
2
3
4
5
View of the
Front of the
Socket
9 - - Not used
The pin arrangement corresponds to the RS232 DCE arrangement. This allows
the use of customary 9-pole 1:1 socket/plug cables for the direct connection of
a PC.