Gasboy CFN Series Diagnostic Manual - Manual (Page 396)

CFN Islander
13-28 12/26/02
SITE COMMUNICATIONS I/O PCB (C06580)
The Islander II Site Communications I/O PCB:
•
interfaces with 2 of the site controller RS232 ports
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provides the ability to select RS232 or RS422 communication
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provides connection for internal modem
•
provides diagnostic LED’s
Layout
LED Indicators
LED Function Status
D1 Transmit data local port (or port 1) Flashing when data transmitted to Islander
D2 Carrier Detect local port (or port 1) Lit when carrier detect is received
D3 Receive data local port (or port 1) Flashing when data received from Islander
D4 Data terminal ready local port (or port 1) Lit when data terminal ready is on
D5 Carrier Detect remote port (or port 3) Lit when carrier detect is received
D6 Transmit data remote port (or port 3) Flashing when data transmitted to Islander
D7 Receive data remote port (or port 3) Flashing when data received from Islander
D8 Data terminal ready remote port (or port 3) Lit when data terminal ready is on