Schneider Electric Processor Adapter Establishing Configuration Extension Memory, Pull-down list

Configuring an M1 CPU with Modsoft

Establishing Configuration Extension Memory

Introduction	By default, no memory space is allocated for configuration extension memory. If
	you want to use the Peer Cop capability to handle Modbus Plus communications,
	you need to define some configuration extension memory to enable Peer Cop.
	Extension memory is specified as a number of 16-bit words. That number is
	entered in the ExtSize entry of the Configuration editor. Once an adequate
	number of words has been specified here, Peer Cop will be enabled in the CfgExt
	pull-down list.
How Much
	The minimum Peer Cop ExtSize memory requirement is 20 words; the maximum
Memory?	is 1366 words.
	Follow these guidelines for estimating the amount of extension memory you will
	need for your Peer Cop database:
	For...		Add...	Up to a maximum of...
	Overhead		9 words	--
	Global output		5 words	--
	Global input		number of words=	1088 words
			number of devices x
			(1 + 2 x number of device subentries)
	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
Procedure
	From the Configuration Overview screen, follow the steps below to establish
	configuration extension memory:
	Step	Action
	1	From the Cfg Ext menu, select Cfg. Extension Size.
		Result: The cursor will appear in the Cfg. Extension Used/Size entry.
	2	Type the desired size.
	3	Push <Enter>.

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