AKM/AK Monitor/AK Mimic Installation guide RI8BP602 © Danfoss 10/2011 19
Principle
Router lines describe the “paths” information has to pass through. A message with information may be compared with a letter where
the recipient’s name is written on the envelope and the sender’s name inside the envelope together with the information.
When such a “letter” appears in the system,
there is only one thing to do - check its destination.
And there are only three possibilities:
- Either it is destined for the holder himself
- or it has to be rerouted through one port
- or it has to be rerouted through the other port.
This is how the “letter” moves on from one intermediate station to another, until it finally ends up with the receiver. The receiver
will now do two things, namely acknowledge receipt of the “letter” and act on the information contained in the “letter”. The
acknowledgement is then another new “letter” appearing in the system.
To ensure that the letters are sent in the right directions, it is necessary to define all the directions used in all intermediate stations.
Remember, there will also be acknowledgements.
Receivers
All receivers (and transmitters) are defined with a unique system address made up of two numbers, e.g. 005:071 or 005:125. The
first number may be compared with a street address in the normal postal system, and the second number will then be the house
number. (The two examples shown are two houses on the same street).
In this system all the controllers also have a unique system address.
The first number indicates a network, and the other a controller.
There may be up to 255 networks, and there may be as many as
125 controllers on each network (number 124 must however not be
used).
Number 125 is special. This is the number with which you define a
master on the network (this master contains important settings with
respect to alarm handling, among other things).
When there are several networks, the connection between the
various networks will always be a gateway.
In the same network there may often be several gateways, e.g. a
modem gateway and a PC gateway.
It is in all these gateways the various router lines have to be defined.
How?
Ask yourself three questions and answer them!
- Which network?
- Which direction?
- For which address (a telephone number if it is for a modem), (an 0, if it is for your own network*), (nothing, if it is for a PC).
Examples
Net Direction For
Set a network number or a range with several
consecutively numbered networks
The DANBUSS output
or the RS232 output
DANBUSS address
or a telephone number, if it is a modem
003 to 004 RS 232 Telephone number
005 to 005 DANBUSS 0
006 to 253 DANBUSS 125
254 to 254 RS 232 (for PC)
255 to 255 DANBUSS 125
There is an example of a complete system on the next page.
Net 1
Net 2
Net 5
(It will not be possible for all the router lines shown
here to appear in the same gateway).
*) If the master gateway is an AKA 243, the LON part will be regarded as an individual network seen from the master gateway itself. But seen from a slave
on the same network, it must be addressed to No. 125.
Appendix 2 - Router lines
(44 pages)
(44 pages)
(44 pages)
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