J890 and J892 Indications
(Original Document)
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Overview
On the face of both the J890 and J892 RIO interface modules are a set of LEDs that indicate the RIO processing status of the module and one or two BNC cable ports used to connect the drop to the RIO network.
J890 Front View
AS-J890 front view
The J892 has additional LEDs that indicate the ASCII device processing status at the drop and a pair of 25-pin, D-shell, female ports for connecting ASCII devices at the drop.
NOTE: The LED indicators on the front panels also provide diagnostic information.Various flash patterns indicate errors detected in the RIO interface and/or in the ASCII interface.
J892 Front View
J892 front view
J890 and J892 LED Status Indications for RIO Interface
J890 and J892 LED status indications for RIO interface.
Name
Color
Indication (when ON)
READY
Green
RIO interface board succesfully passed power-up test
COMM ACTIVE
Green
I/O data being received or sent
COMM ERROR
Red
Communications error between J890 / J892 and 984
OURBUS ERROR
Red
Detected communications error between J890 / J892 and I/O
CARRIER DETECT
Green
Processor sensed carrier signal
NOTE: The COMM ERROR LED for the RIO Interface is ON if only one port on a dual port interface is connected, indicating that no signals are present at the unconnected port. Communications with the 984 are not effected.
J892 LED Status Indications for ASCII Interface
J892 LED status indications for ASCII interface
Name
Color
Indication (when ON)
READY
Green
ASCII board succesfully passed power-up test
COMM ACTIVE
Green
ASCII data being received or sent
COMM ERROR
Red
Detected communications error between J892 and ASCII device
INTERFACE ERROR
Red
Detected ASCII communications error in the J892
NOTE: The COMM ERROR LED for the RIO Interface is ON if only one port on a dual port interface is connected, indicating that no signals are present at the unconnected port. Communications with the 984 are not effected.