Rockwell Automation 1203-EN1 EtherNet/IP-to-SCANport Module - Manual (Page 25)

Installing the Module 2-7
Figure 2.5 Powering Multiple Modules via Daisy Chaining
The number of 1203-EN1’s that can be daisy-chained together is
dependent on the available output capacity of the DC power source or
AC-to-DC converter. The following example illustrates how to
determine the number of daisy-chained 1203-EN1’s that can be powered.
Example: Suppose the 1203-EN1’s being daisy-chained will be powered
by the Allen-Bradley AC-to-DC Converter 20-XCOMM-AC-PS1, which
has an output capacity of 830 mA. Since the current consumed by the
1203-EN1 is 150 mA at 24 VDC, divide the power source’s available
output capacity by this consumption (830 mA
÷ 150 mA = 5.533), and
round down the result. For this example, 5 daisy-chained 1203-EN1’s
can be powered.
LED Status Indication at Power-Up
After making the appropriate power wiring connection(s) to the
module(s), apply power. When power is applied to a module for the first
time, the status indicators should be green or off after an initialization. If
the status indicators go red, there is a problem. Refer to
Chapter 7 ,
Troubleshooting .
1203-EN1 Modules
AC-to-DC
Converter
DC Power
Source
. . .
+ - + - + -
+ -
- or -