ABB PLUTO Safety-PLC Panduan Memulai

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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

2TLC172007M0203_B.doc