Product : ISaGRAF V3
Date : 5-March-1996
File : Nwadr0.Network address (Modbus 16 bit format) exception.htm
Subject : Network address (Modbus 16 bit format) exception
Keywords: Modbus - network address
The ISaGRAF system does not handle the "0000" network address. On
both development workbench and target system, a null network address
means that no address is defined for a variable. This is due to the
fact that the definition of a network address for a variable is an
So you cannot use the "0000" value in your OEM system. You
absolutely need to implement an offset system, to assume the fact
that the first valid network address is "0001".
Copyright © 1996-2009 ICS Triplex ISaGRAF Inc. All rights reserved.