3
Connections of the Gateway to the configuration
computer
The connection of the configuration computer to the Gateway is
made to the 9-pole male connector at the back of the Gateway
labelled ‘config.’. This connection can be made by two different
cables:
■
a cable with a 9-pole female connector at both ends
■
a cable with one 9-pole female connector (to Gateway) and one
25-pole female connector (to the computer)
A program on a diskette delivered with the Kit can start the initial
configuration once the cable connects the Gateway to the
computer.
Remove the cable after configuration.
Connections to make for a cable with a 25-pole female
connector
Make the connections as listed:
Computer
Gateway (connector labelled 'config.')
25-pole female
9-pole female
2 TX
RX 2
3 RX
TX 3
7 GND
GND 5
Connections to make for a cable with two 9-pole female
connectors
Make the connections as listed:
Computer
Gateway (connector labelled 'config.')
9-pole female
9-pole female
3 TX
RX 2
2 RX
TX 3
5 GND
GND 5
Connections of the Gateway to the BMS
There are two possibilities to connect the BMS to the gateway:
■
using an RS-232 standard
■
using an RS-485 standard
RS-232 connection diagrams (Modbus-Jbus and BACnet)
The RS-232 connection to the supervisory system is standard in
Modbus-Jbus and BACnet. The BACnet Gateway has no other
options to make a connection.
Make the connection at the gateway side to the 9 pin male
connector labelled ‘modem’.
The connections you have to make depend on which cable you
use. The possible connections are listed:
Connections to make for a cable with a 25-pole female connector.
Make the connections as listed:
Supervisory system
Gateway (connector labelled 'modem')
25-pole female
9-pole female
2 TX
RX 2
3 RX
RX 3
7 GND
GND 5
Connections to make for a cable with two 9-pole female connectors.
Make the connections as listed:
Supervisory system
Gateway (connector labelled 'modem')
9-pole female
9-pole female
3 TX
RX 2
2 RX
TX 3
5 GND
GND 5
In any case, refer to the specifications of the supervisory system
for other possible connection types. However, the gateway only
manages the signals TX and RX.
RS-485 connection diagrams (only for Modbus-Jbus)
The RS-485 connection diagrams can only be used by Modbus-
Jbus.
The possible connections are listed:
Supervisory system
Gateway (connector labelled RS-422/RS-485)
GND 1
TX+/RX+ 4
TX-/RX- 5
The pinning from the supervisory system side is omitted because
it changes depending on the particular supervisory system being
utilised.
H
ARDWARE
CONFIGURATION
Opening the cover of the Gateway gives you access to the four
jumpers present on the card. The hardware configuration is made
by placing the jumpers in a specific way to enable different ports
and their options. The A, B, C, D jumpers are shown in the figure.
Read the instructions to enable a port or an option of a port.
How to enable the RS-232 serial port (‘modem’)
towards the supervisory system
This way the ‘RS-422/485’ modes and respective port are
disabled.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper
Modbus
BACnet
A in 1-2
Yes
Yes
How to enable the ‘RS-422/485’ serial port towards
the supervisor
This way the RS-232 modes and the respective ‘modem’ port are
disabled.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper
Modbus
BACnet
A in 2-3
Yes
No
