Automationdirect.com HX-ECOM Series - Network Server (Slave) Operation; H24-ECOM-(F) Indicators; LINKGD Indicator; ACT Indicator

Ethernet Communications Modules, 3rd Edition, Rev. D
7-5
Chapter 7: Maintenance and Troubleshooting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
Network Server (Slave) Operation
H24-ECOM-(F) Indicators
The table below describes the three status indicators on the H24- ECOM modules.
LINKGD Indicator
The green LINKGD (link good) LED is ON steady when the H24-ECOM-(F) module is
correctly connected to an active device on the network and is receiving 5VDC operating voltage
from the PLC power supply. The LINKGD LED verifies that the proper cables are connected,
and the H24-ECOM-(F) module is functioning correctly. If a mismatch with the 10BaseT or
10BaseFL connections occurs this LED will not be illuminated.
ACT Indicator
The red ACT (activity) LED flashes to indicate that the module sees data travelling on the
network. If any network device is sending or receiving data, the ACT LED will be illuminated.
In idle mode (no network traffic) this LED is OFF. During heavy communication loads this
LED will be steady ON.
ERROR Indicator
If the H24-ECOM-(F) module’s red ERROR indicator is flashing or steady ON, a fatal error
has occurred. The error may be in the H24-ECOM-(F) module itself, or a network problem
may be causing this symptom. The ERROR indication can be caused by a faulty ground, an
electrical spike or other types of electrical disturbances. Cycle power to the system to attempt
clearing the error.
Indicator Status Description
LINKGD
ON - Green Properly connected to network
OFF Not connected to network or incorrect configuration
ACT
Flashes Red Active network data
OFF Network idle
ERR
ON or Flashing Red A fatal error has occurred
OFF No error present