Rockwell Automation 2755-DM9, -DM9E High Speed Decoder - Manual (Page 14)

Chapter 2
Description of Hardware
2–4
Note: This LED may not correspond to a read output condition (refer to page
4-41). In the triggered mode, the read output condition must meet the fields
per package parameter.
•
CPU ACTIVE - This green indicator is continuously illuminated under
normal operation. Failure of the CPU ACTIVE indicator to illuminate is
an indication of a hardware failure.
•
COMMUNICATIONS - This yellow indicator illuminates momentarily
whenever data is sent to or received at either of the communications ports.
•
OUTPUTS 1 through 8- Each of these red indicators indicate the status
of the output modules. When an output module is turned on, the
respective indicator illuminates.
Note: If you have a Catalog No. 2755-DM9 decoder, the LED label is
attached. If you have a Catalog No. 2755-DM9E decoder, the LED label is
not attached. Apply the appropriate language label supplied with the
decoder.
Figure 2.2
LED Indicators
90-061-5