
Configuring an M1 CPU with Concept
270
870USE10110 July 2004
Establishing Configuration Extension Memory for Peer Cop for M1 CPUs with
Concept
Introduction By default, the Peer Cop capability is disabled. If you want to use Peer Cop to handle
Modbus Plus communications, you need to enable this capability and adjust the
amount of configuration extension memory.
How Much
Memory?
The minimum Peer Cop memory requirement is 20 words; the maximum is 1366
words.
Follow these guidelines for estimating the amount of extension memory you will
need for your Peer Cop database.
Procedure From the PLC Configuration screen, follow the steps below to enable Peer Cop and
adjust the amount of Configuration Extension memory:
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
Step Action
1 From the Configure menu, select Config extensions OR double-click anywhere in
the Config Extensions region of the screen. You can also double-click on Select
Extensions at PLC Configuration Tree in the left window pane.
Result: The Configuration Extension dialog box appears.
Configuration Extensions
D
ata Protection
OK
Cancel Help
Peer Cop
IEC Hot Standby
984 Hot Standby
T
CP/IP Ethernet:
Sy
max Ethernet:
M
MS Ethernet:
Pr
ofibus DP:
0
0
0
0
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