
Configuring a Modbus Plus Network in Modsoft with Peer Cop
870USE10110 July 2004 217
Accessing the Peer Cop Configuration Extension Screen with Modsoft for
Momentum Components
Introduction Before you can access the Peer Cop Configuration Extension screen, you must
have specified enough extension memory to support your Peer Cop database.
This section describes how to access the screen and, if necessary, adjust the
amount of configuration extension memory.
Accessing the
Screen
Starting from the Configuration Overview screen, select Peer Cop from the Cfg Ext
menu.
Adjusting
Extension
Memory
Extension memory is specified as a number of 16-bit words. That number is entered
in the ExtSize field of the Configuration Overview screen. Once an adequate number
of words has been specified there, Peer Cop will be enabled in the Cfg Ext menu.
Extension
Memory Size
The minimum Peer Cop memory requirement is 20 words. The maximum is 1366
words.
Estimating How
Much Memory to
Reserve
Follow these guidelines for estimating the amount of extension memory you will
need for your Peer Cop database.
Note: If Peer Cop is disabled in the pull-down list, you will need to specify enough
extension memory to support your Peer Cop database before you can continue.
For... Add... Up to a maximum of...
Overhead 9 words --
Global output 5 words --
Global input number of words= number of devices x
(1 + 2 x number of device subentries)
1088 words
Specific output 2 words for every device entry in Peer Cop 128 words
Specific input 2 words for every device entry in Peer Cop 128 words
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