Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 42)

42 Publication 1404-UM001F-EN-P - November 2009
Chapter 3 Powermonitor 3000 Unit Operations
Displaying Information
The display screen consists of two rows of five alpha-numeric LED
digits. At the right of this screen is a column of phase indicators: L1,
L2, L3 and N. These indicators show which phase (or phases) is
referred to by the information being displayed on the 2x5 screen. The
phase indicators also indicate program mode by flashing.
Power Up
When the display module powers up, it first illuminates all of its LED
indicators for approximately 2 seconds. It then displays its firmware
revision number:
 .  .
 . 
After about 2 seconds, the display waits for communication with the
master module. If it doesn’t receive any messages within 8 seconds, it
displays:


At any time, if the display module stops receiving information from
the master module, it displays the Check Rx message. If it is receiving
messages but not able to send messages (it determines this from a
lack of response from the master module), the display module
displays:


Once the display module begins communicating with the master
module, it displays it on the screen and the Check Rx or Check Tx
messages disappear. No operator intervention is required to clear
these messages.