REQUIREMENTS/SPECIFICATIONS
2-11
modules are equipped with the same indicators. Three
concentrator-specific LEDs indicate the current ring speed (16MB),
error status (ERR), and the current mode, management (MGMT) or
automatic, and two port-specific LEDs per port that indicate Port
Enabled (PEN) and Port Linked (LNK) status. These are illustrated
in Figure 2-4.
Figure 2-4 TRMIM-24A LANVIEW LEDs
16MB
- Ring Speed LED (Yellow) is lit to indicate that the
concentrator module ring speed is set to 16 Mbit/s. When this
indicator is not lit, the ring speed is set to 4 Mbit/s.
ERR
- Error (Red), when lit, indicates one of the ports is bypassed
due to a ring speed error (a device at one of the ports is set to the
wrong ring speed) or the detection of a concentrator module
hardware failure.
PEN
- Port Enabled (Yellow - 12 or 24), when lit, indicates that the
associated port is enabled by network management. When this LED
is flashing and the LNK LED is lit, the device at that port is set at the
wrong ring speed and the port is bypassed.
TRMIM-24A
1
X
1
3
X
MGMT
ERR
LNK
PEN
123
456
789
101
112
131
415
161
718
192
021
222
324
PEN
LNK
SN
16MB
LNK
PEN
ERR
MGMT
16MB
93 SERIES
