14
Set up Network
The addresses of the network sensors are 1-64 so it is normal to have the Combi main
panel address above this, the default address is 201. Using
ENGINEER’S
menu 27 (set
up network), the address of the Combi can be changed using
UP (1)
and
DOWN (5)
buttons. Pressing
SELECT (3)
saves this address and presents a view of all other
devices connected to the COMBI.
Using the UP (1) and DOWN (5) buttons each address in the system can be viewed and
if a device exists, a letter will appear to tell you what device is connected.
The following table shows what type of device each letter represents:
P = Combi Panel
C = CAN Sensor
R = Repeater or Network Controller
I
= 8 Channel 4~20mA Output Module
S = 4 Relay + Sounder Module
Z = 32 Relay Module
If a repeater is detected, the letter ʻRʼ will appear together with a ‘Y’ or ‘N’,
N means that you are not currently connected to the repeater.
Pressing
+ (4
) will change the ‘N’ to a ‘Y’ to indicate connection and
– (2)
will change
back to no connection.
When the repeater is connected, the Combi will send text and LED data to it and accept
button presses from the repeater thus allowing remote operation of the combi panel.
Pressing
SELECT (3)
again returns to the
ENGINEER’S
menu.
Modbus baud rate
Using
ENGINEER’S
menu 34, the baud rate used by Modbus can be changed. Pressing
UP (1)
and
DOWN (5)
will alter the baud rate.Pressing
SELECT (3
) returns you to the
ENGINEER’S
menu.
The Modbus protocol for the data packets received from a master is usually a request for
specific data to be sent back to the master. This protocol is covered in a separate
document known as MODBUS RTU protocol. In its simple form, the master will ask for
the data kept in any of the 250 registers located in the Combi system and the Combi will
reply with the requested register data.
These registers are 16 bit numbers representing 0 to 65535 in decimal. A view of these
registers can be seen by using
ENGINEER'S
menu 1.
UP (1)
and
DOWN (5)
will display
different register numbers with the data. It is useful when first setting up the system.
Additionally,
ENGINEER'S
menu 4 allows you to view the Modbus data packets received
and transmitted. Again, this is used when first setting up the system and can diagnose
requests and responses.
See Combi Modbus register definitions in the appendix.
