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12-18-2011, 03:35 PM #1
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Automated Logic Bacnet MS/TP vs Arcnet
I need to tie in a JACE to existing ALC "SE" and "ZN" controllers via BACnet MS/TP but it appears the field bus is Arcnet. The literature for the controllers read Arcnet or BACnet MS/TP compatibility. Is there something that needs to be done to configure the ALC controllers for BACnet MS/TP?
Any help would be appreciated!!!
Thanks.
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12-19-2011, 09:42 AM #2
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According to page 6 of this manual, the ZN controllers have a jumper that you move between ARCnet or MS/TP positions.
Once you have it set up as MS/TP, you then have to set dip switches 1 & 2 to specify the baud rate.
I assume you'll want to cycle power after changing either the jumper or the dip switches.
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12-19-2011, 10:04 AM #3
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Why go to the trouble of having to go to every controller, why not integrate to the LGR via IP or Ethernet?
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12-19-2011, 02:42 PM #4
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If you change the jumpers on all the modules you will then have to move communication wires from the arcnet port to the MS/TP Port (S1). Also you will have to set jumper on LGR to turn on MS/TP on port S1 and change Arcnet network to MS/TP in sitebuilder.
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12-19-2011, 09:45 PM #5
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Arcnet
Every time I have seen a ALC Arcnet it was 2 wire, I don't know how much of a problem this would be in ALC but it would be a big problem with any other MSTP installation.
I agree with the LGR integration.
Greg
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12-19-2011, 09:49 PM #6
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Why? Are you doing 4 wire MSTP or are you saying the Arcnet is missing the shield?
Originally Posted by GregF
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12-19-2011, 10:20 PM #7
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Arcnet
Missing the shield. Originally Posted by crab master
Greg
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12-19-2011, 10:36 PM #8
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Arcnet and ma/tp both have shields if ALC wiring specs are followed. There is a different wire spec for each. Originally Posted by GregF
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12-20-2011, 01:58 AM #9
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My vote is integrate with the LGR unless you or you have someone else at the ready to adjust settings on the configuration of the LGR as The_USC mentioned.
Be careful not to make changes you are not knowledgeable enough or prepared to do on the fly. I don't have the exact specifics to tell you verbatim what to do even though I have worked with ALC for about a year, but I know it's a little more involved than just changing the jumpers and moving the wires.
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