Re: [foxboro] Mac Address
- From: "Johnson, Alex (Foxboro)" <ajohnson@xxxxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Fri, 10 May 2002 09:23:01 -0400
MAC addresses are the fundamental addressing mechanism in any Ethernet based
LAN.
Each Ethernet chip manufacturer is given a range of MAC addresses that they
may build into their E'net chips.
MAC addresses are unique. In the entire world, no two chips are to have the
same MAC address.
In the I/A Series, we override the MAC of our FT stations so that each
station has the same address. SysDef ensures that no two stations in the
same control system have the same MAC address.
Since the MAC addresses are the same both members of an FT pair get the same
messages from other stations. This is required for FT to work.
Hope this helps.
Regards,
Alex Johnson
System Products - Invensys Systems, Inc.
10707 Haddington
Houston, TX 77043
713.722.2859 (office)
713.722.2700 (switchboard)
713.932.0222 (fax)
ajohnson@xxxxxxxxxxx <mailto:ajohnson@xxxxxxxxxxx>
Come to the Invensys Showcase: http://www.invensysshowcase.com/
<http://www.invensysshowcase.com/>
-----Original Message-----
From: Chetan_R_Jobanputra@xxxxxxx
[SMTP:Chetan_R_Jobanputra@xxxxxxx]
Sent: Friday, May 10, 2002 12:42 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Mac Address
Not that much urgent. Not any problem .
Regards,
CRJ
Chetan_R_Jobanputra@xxxxxxx@freelists.org on 10/05/2002 11:01:16
Please respond to foxboro@xxxxxxxxxxxxx
Sent by: foxboro-bounce@xxxxxxxxxxxxx
To: foxboro@xxxxxxxxxxxxx
cc:
Subject: [foxboro] Mac Address
Hello Friends,
What is the significance of each digit of 12 digit MAC Address of IA
Modules?What this No. represents ?
Regards,
Chetan R J
RPL Refinery ,
Jamnagar, India
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