Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 33)

Publication 1761-UM006E-EN-P - August 2005
Operation 3-3
The subnet mask for each Ethernet device is then, 255.255.0.0.
Figure 3.1 Example Ethernet Network
131.200.50.96 computer’s Ethernet card
131.200.50.97 Series B/C/D 1761-NET-ENI/1761-NET-ENIW #3
(1769-L20 or 1769-L3x CompactLogix
controller)
131.200.50.98 Series A or B/C/D 1761-NET-ENI/1761-NET-ENIW #4
(MicroLogix 1500)
IMPORTANT
The RS-232/DF1 interface between the
CompactLogix controller and its ENI/ENIW module,
and between the computer (RSLogix5000/RSLinx)
and its ENI/ENIW module, should use 38400 baud.
This will allow the fastest upload/download of
programs.
(For series A and B ENI or series B ENIW only)
When using 38400 baud, the number of Stop Bits in
RSLinx and in the CompactLogix controller must be
set to 2.
Table 3.1 Example Network IP Addresses
IP Address ENI or ENIW Series Device
ETHERNET
FAULT RS232
NET TX/RX TX/RX
PWR
CABLE EXTERNAL
IP
ETHERNET FAULT RS232
NET TX/RX TX/RX
PWR
CABLE EXTERNAL
IP
ETHERNET
FAULT RS232
NET TX/RX TX/RX
PWR
CABLE EXTERNAL
IP
ETHERNET
FAULT RS232
NET TX/RX TX/RX
PWR
CABLE EXTERNAL
IP
< > ETHERNET ...
1747-L55x (SLC 5/05)
1769-Lxx (CompactLogix)
1756-Lx (ControlLogix)
ENI #2 (Series A)
Personal Computer with
RSLogix 5000, RSLogix 500
and RSLinx
1756-ENBT
ENI #4 (Series A or B/C/D) Ethernet
Hub/Switch
(10 Base T)
PC COMM Port
RS-232/DF1
PC Ethernet
Interface Card
RS-232/DF1
MicroLogix 1500
1769-Lxx (CompactLogix)
ENI #3
(Series B/C/D)
ENI #1 (only
necessary for
connection to
series A ENI #2)
24V dc
24V dc
24V dc