WEB/CP-202-XPR AND WEB/CP-602-XPR CONTROLLERS
95-7775—01 26
Beat
The yellow heartbeat BEAT LED is located on the cover. Following boot-up, the heartbeat LED blinks about once per second. If
the heartbeat LED stays on constantly, does not light, or blinks very fast (more than once per second), contact System
Engineering for technical support.
Ethernet
A green activity LED for each of the two LAN ports (PRImary for LAN1, SECondary for LAN2) is located on the cover under the
STATUS and BEAT LEDs, and operate as follows.
• Off – No Ethernet link is made
• On – Ethernet link is present, but no activity on the LAN
• Blinking – Ethernet link is present with data activity on the LAN.
Relay Out
Each of the four relay outputs has an associated green LED on the cover, “K4” to “K1” (from top-to-bottom). Under normal
operation, each digital status LED indicates activity as follows:
• Off – relay open / no current flows.
• On – relay closed / load current flows.
Therefore, an On status indicates that the load is powered.
(Future Use) JENNIC
The green JENNIC LED provides status for the onboard Sedona/Jennic wireless module, and is visible on the cover. (Sedona/
Jennic module not included in the current product release. Currently, this LED should remain Off without activity).
GPRS
The GPRS LED provides status of the onboard GPRS modem (for controller models so equipped), and is visible on the cover. It
flashes various LED patterns based on the state of the modem. This LED is directly under control of the modem itself, versus
Niagara
AX
software.
Upon initial power up, the GPRS LED pattern is typically 600ms On and 600ms Off, and may change depending on various
modem state changes. If the controller does not have the integral GPRS modem, this LED should remain Off without activity.
Serial
LEDs for the two serial ports are located on the controller’s main board, near the Analog Output terminals (Fig. 18 on page 25).
Board markings S1 and S2 correspond to the software configuration of the COM1 and COM2 ports. LEDs show the transmit (TX)
and receive (RX) activity for the two serial ports.
You must remove the right cover to see the serial port LEDs. See Removing and Replacing the Covers on page 8.
• The yellow TX (transmit) LED indicates that the controller is sending data out the serial port over a communications line to a
connected device.
• The green RX (receive) LED indicates that the controller is receiving data from a connected device.
These LEDs provide a fixed on-time when data is detected on the port. If the receive LED is on constantly, this indicates a
problem with the communications channel, such as a shorted wire or reversed wiring.
NOTE: If the RS-485 port is connected to configured remote I/O modules (IO-16-REM-H), during normal operation the COM2
LEDs both continuously flash about 3 times a second, indicating ongoing polling.
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