Communications support modules
Hardware - SIMADYN D 6-37
Edition 12.2004
6
6.8.5 SS4 diagnostic functions
Each receptacle of the CS7 support module has 2 LEDs, which allow
diagnostic of the associated communication module (operating and
fault/error conditions).
LEDs on CS7 Significance for SS4
Green
H10 / H20 / H30
Yellow
H11 / H21 / H31
Dark Dark Communications module not initialized
Flashing Flashing RAM test error
Flashing Dark Hardware of the communications
module is initialized;
wait for a connection to be established
to the initializing CPU module
Lit Dark DUST / USS initialized
Lit Lit Data transfer running
Dark Lit Software error
Table 6-4 Functions of the LEDs on CS7
An additional four LEDs for interface diagnostics is provided on the
communications module. However, when installed these LEDs are not
visible.
LED on SS4 Significance for SS4
H1 Dark / lit:
Flickers / glows:
Hex monitor not receiving
Hex monitor receiving data
H2 Dark / lit:
Flickers / glows:
Hex monitor not transmitting data
Hex monitor transmitting data
H3 Dark / lit:
Flickers / glows:
DUST/USS interface not transmitting
DUST/USS interface transmitting data
H4 Dark / lit:
Flickers / glows:
DUST/USS interface not receiving data
DUST/USS interface receiving data
Table 6-5 Functions of the LEDs on SS4
LED on CS7
LED on SS4
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