Re: [foxboro] Integrator 30 for Modbus quirk
- From: "William C Ricker" <wcricker@xxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 5 Feb 2009 00:54:26 -0500
Seem to remember something about the importance of matching period and phase
in the blocks talking to a slave. Maybe the MDSCAN had to match the ECB or
something like that.
We saw problems when tried to adjust phasing to level the load. We found
that scanning stopped when periods and/or phases were shifted. Problem
now is that it's been a couple of years since the last time we programmed
one of those and we can't remember the exact details.
William C Ricker
FeedForward, Inc.
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Loudermilk, Virgil:
Sent: Wednesday, February 04, 2009 8:47 AM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Integrator 30 for Modbus quirk
We are trying to commission a new drop on an RS485 Modbus network on an
MG30. We can't get the Integrator to poll this new device. We've
deleted and undeleted the ECB, and the compound with the MDSCAN. But
when looking at the traffic, we never see a poll for the new device.
The thing is pretty loaded with 27 Modbus devices at a 4 second scan. A
data analyzer still shows some gaps of a few hundred milliseconds where
it SHOULD be able to fit in just one more. Any ideas? Thanks.
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