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LeakFilm MC Technical Manual
MAN0966 04-15
LeakFilm MC (master controller) can be connected to LeakFilm Pro, 5 and HC (slave
controllers) using RS-485 as shown in the above diagram. For LeakFilm Pro or HC
controllers, up to 200 units can be connected to the master controller while LeakFilm 5
is limited to 15 units. When the slave controllers communicate with the master controller,
each slave controller should have a unique ID. See the manual of each slave controller for
instructions on how to set the communication ID.
Caution:
Each slave controller connected to LeakFilm MC should have a unique
communication ID, otherwise incorrect data can be transmitted to the master
Once the LeakFilm MC turns on, it starts to scan all IDs to check the slave controllers
connected to it. The user can determine the maximum ID number (MaxMD) of slave
controllers which is used for scanning from 1 to MaxMD. The acceptable range is 1 to 200
and the default value is 200. See "6.1 Electrical connections" for instructions on how to set
MaxMD.
When you use LeakFilm 5 together with LeakFilm Pro & HC, set the ID of LeakFilm 5
between 1 and 15 first and then set the IDs for LeakFilm Pro and HC later to the rest of the
numbers, because LeakFilm 5 ID can be set only from 1 to 15 while LeakFilm Pro & HC can
be set from 1 to 200.
It takes around 20-25ms for the master controller to scan 1 slave controller, so it requires
at least 5 seconds (cycle time) to scan 200 slave controllers. If the cycle time is too long for
the application, the number of slave controllers connected to the master controller should
be limited. For example if the cycle time needs to be less than 1 second, a maximum of 40
slave controllers should be connected to one master controller.
Caution:
Each slave controller connected to LeakFilm MC should have a unique
communication ID, otherwise incorrect data can be transmitted to the master
Caution:
The number of slave controllers connected to the master controller should
5. Installation
controller.
controller.
be limited based on the required cycle time.
10
3013M5005 Issue 3
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