ABB PLUTO Safety-PLC Startup Manual

Startup guide for Pluto Safety PLC, connected in a bus system
1. Check the bus cable
·
How many meters of bus cable have been
used?
·
Is the system connected with stub
cables?
·
How long is each stub?
·
What is the total length of stub cables?
·
Resistors for end termination must only
be connected in the beginning and the
end of the system.
·
When measuring the resistance between
CH and CL at one Pluto (all units shall be
dead) the resistance shall be somewhat
under 60 Ω.
The following data are necessary to select the correct communication speed in the system. A lower speed
gives the possibility to communicate over a longer distance, but it results in that somewhat fewer Pluto's can
be connected. A more detailed description can be found in the Pluto Hardware Manual, chapter Bus
communication.
Bus speed Cable length
100 kbit/s 600 m
125 kbit/s 500 m
200 kbit/s 300 m
250 kbit/s 250 m
400 kbit/s 150 m
500 kbit/s 100 m
800 kbit/s 60 m
1 Mbit/s < 20 m
Communication speed for the project is set in the Pluto Manager. Open the window Project NoName, open
the pop-up menu under Baudrate Pluto Canbus and select the correct speed.
2. Read the IDFIX number
·
Must be performed before the program is downloaded to any of the units.
·
The programming cable must be connected to each Pluto when reading that particular Pluto's IDFIX.
·
Read IDFIX numbers to all Pluto's using the command "Copy online IDFIX to clipboard" under the
menu "Tools". Paste the number to the corresponding Pluto.
Stub length Total stub length
25 m 120 m
20 m 100 m
13 m 70 m
10 m 50 m
6 m 30 m
5 m 25 m
3 m 15 m
1 m 5 m
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2TLC172007M0203_B.doc