Publication 1761-UM006A-EN-P - February 2001
Connecting 1769-L20 CompactLogix Controllers on Ethernet 7-9
For this example, as mentioned earlier, we will assign the following IP
addresses to the devices on Ethernet:
The Message Instructions for the L20 controller, Rungs 2 through 7,
used to configure the ENI module, must be “PLC2 Unprotected Write”
Message Type. The “Destination Element” can be any valid PLC2
command value. “010” is used in this example because it is the first
available valid value. This parameter is not used by the ENI, but must
be a valid value for RSLOGIX5000 to accept it.
An example of the MSG Configuration tab and the Communication tab
for the MSG Instruction used to configure the IP address for the ENI
(Rung 4) are as follows:
Table 7.5 Example IP Addresses for Ethernet Devices
Device Node Address (for L20 MSG) IP Address
SLC-5/05 1 131.200.50.92
1756-ENET 45 131.200.50.93
1761-NET-ENI #2 N/A 131.200.50.94
1761-NET-ENI #1 N/A 131.200.50.95
Computer Ethernet Card N/A 131.200.50.96
IMPORTANT
The IP addresses in Table 2 were arbitrarily assigned
for this demonstration and should only be used on
an isolated Ethernet network as in this example.
Contact your system administrator for unique IP
addresses if you are connecting your Ethernet
devices to your companies Ethernet network.
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