Crossload Behavior for the 1756-EN4TR Module

Configuration settings for the controller and redundancy module are crossloaded from the primary chassis to the secondary chassis during the synchronization process. However, the crossload behavior for the 1756-EN4TR module requires that you apply some security settings to the 1756-EN4TR module in the primary and secondary chassis separately. See the following table to determine whether you must apply settings to the module in the primary chassis only or both primary and secondary chassis. For information about how to configure these settings, see the ControlLogix EtherNet/IP Network Devices User Manual, publication 1756-UM004.
1756-EN4TR Security Setting Crossload Behavior
Security Setting
Crossloads to Secondary Chassis
Set the IP address with rotary switches or SD card
No
Disable/enable Ethernet port
No
Disable
CIP Security™
 ports
IMPORTANT:
  • To disable
    CIP Security™
     ports, you must restart the module.
  • To re-enable the
    CIP Security™
     ports, you must reset the device to factory defaults.
Yes
Disable/enable LLDP
No
Disable the USB port
Yes
Disable/enable the SD card
Yes
Disable/enable the 4-character status display
Yes
Disable/enable webpages
Yes
Disable/enable SNMP
Yes
Disable the socket object
No
Disable the email object
Yes
Enable/disable Explicit Protection Mode
No
Security policy
No, but the security policy is deployed to both chassis by
FactoryTalk® Policy Manager
.
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