Rice Lake 920i Programmable HMI Indicator/Controller - DeviceNet Interface - Manual (Page 10)

6 520/720i/820i/920i DeviceNet Installation and Programming Manual
2.4 LED Status Indicators
An LED array on the DeviceNet module provides
status information for troubleshooting. LED 2
provides network status; LED 3 provides status
indication for the DeviceNet module (see Figure 2-8).
LEDs 1 and 4 are reserved.
Figure 2-8. DeviceNet Status LED Module
Table 2-4 summarizes the function of the module and
network status LEDs.
A single bi-color LED on the surface of the DeviceNet
m o d u l e p r o v i d e s d i a g n o s t i c i n f o r m a t i o n f o r
debugging the module itself. Table 2-5 lists the
indications provided by the debugging LED.
LED Status Description
LED 2
Network
Status
Off Not powered or not online
Steady Red Critical link failure
Flashing Red Connection time-out
Flashing Green Online, not connected
Steady Green Online, connected
LED 3
Module
Status
Off No power to module
Steady Red Unrecoverable fault
Flashing Red Minor fault
Steady Green Module operational
Table 2-4. Module and Network Status LED Indications
1
2
3
4
Module status
Network status
Status Description
Off No power
Red, 4Hz DPRAM check fault
Red, 2Hz ASIC and FLASH ROM check fault
Red, 1Hz RAM check fault
Green, 2Hz Module not initialized
Green, 1Hz Module initialized and running
Table 2-5. Debugging LED Indications