Interfaces, Displays and Operator Controls
4.2Displays and Operator Controls
The OSM/ESM has the following LED displays:
4.2.1LED Display "Status"
The status display indicates the operating mode of an OSM/ESM:
Fault (red LED):
Status | Meaning |
Lit | The OSM/ESM has detected an error. The signaling contact |
| opens at the same time. The signaled errors are described in |
| Chapter 4.1.7. |
Not lit | No errors detected by the OSM/ESM. |
Stby – Standby (green LED):
This LED does not exist on the OSM TP22 and ESM TP40.
Status | Meaning |
Lit | The standby function is activated, the OSM/ESM is in the |
| standby passive mode. |
Not lit | The standby function is deactivated. |
Flashes | The standby function is activated, OSM/ESM is in the standby |
| active mode; in other words, the master OSM/ESM has failed |
| and the standby OSM/ESM takes over data traffic. |
54 | Industrial Ethernet OSM/ESM |
