Rockwell Automation 1779-KP3R DATA HIGHWAY II User Manual
Page 57
Operation and Troubleshooting
Appendix A
AĆ4
Table A.B
LEDs Associated with the MAC Board
When this LED(s):
is:
then:
IN-RING
ON green this node is a member of the logical ring on the Data Highway II
link.
SEEKING
ON yellow this node is trying to become a member of the logical ring, or
trying to build a logical ring in the case that a ring does not
already exist.
OFF
this node is not a member of a logical ring and is not seeking
membership
DUP ADDR
ON red
another node has the same address on the Data Highway II
link. This condition also places this node into the disconnect
state.
REDUN WARN
1
ON yellow a valid signal is being received at only one of the two Data
Highway II ports.
PORT READY
ON green the on-board relay connecting the MAC board to the dropline is
closed.
SIG QUAL
ON green a valid signal is being received at this Data Highway II port.
TAP FAIL
This LED is not used at this time, and will remain OFF.
EXT TAP CONFIG
This LED is not used at this time, and will remain OFF.
PORT READY
ON green the on-board relay connecting the MAC board to the dropline is
closed.
SIG QUAL
ON green valid data is being received on Data Highway II.
ON red
a difference in data was noted between this port and the other
port, and this port was found to be in error. Each detected error
causes this LED to be turned ON for one-half second.
OFF
no data is being received.
TAP FAIL
ON red
the extended tap has failed or its dropline connection to the port
has opened.
Important: this LED can only go ON if the switch on the MAC
board is set for extended tap
2
1
This LED is only on the redundant module 1779-KP3R.
2
Extended taps are not available with this product release. Although these indicators are present,
they do not perform the functions at this time.