Honeywell BC-200 Operation, Installation & Programming Manual page 123

Appendix
9.6.5.3 NCM S
T
ERMINATION
The NCM-W provides two sets of switches to simplify network set-up. Default settings for BC-200 networks are
shown in the diagram below.

To enable ground fault detection, set SW103 for Channel A; SW101 for Channel B, to the ON position

To activate the on-board end-of-line resistors, set SW100 for Channel A; SW102 for Channel B, to the ON
position. There MUST be a functioning terminating resistor on the first and last node/repeater of a wire
segment (between 2 nodes). This means that in a ring configuration each NCM in the ring MUST have
terminating resistors enabled for both channels.
9.6.5.4 NCM D
The NCM has LEDs that serve as diagnostic indicators to help in troubleshooting and system connection. The
table below outlines their function.
A H I
R C D A
ST AT A
R E C O N
R E S ET
LED Indicator LED Colour
A HI Green
B HI Green
RCD A Green
RCD B Green
STAT A Yellow
STAT B Yellow
RECON Yellow
PULSE1 Green
RESET Yellow
POWER Green
BC-200 Manual – P/N DOC-01-013
F
WITCH UNCTIONS
E F B T E R M B
O F F
O N
S W 1 0 1 S W 1 02
LED I
IAGNOSTIC
LED Description
Illuminates to indicate that the NCM-W Port A is set for high threshold
Illuminates to indicate that the NCM-W Port B is set for high threshold
Illuminates when the NCM is receiving data from the network on Port A
Illuminates when the NCM is receiving data from the network on Port B
Illuminates when the NCM has not received valid data on Port A for at least
16 seconds
Illuminates when the NCM has not received valid data on Port B for at least
16 seconds
Illuminates when a reconfiguration on the network is in progress
Illuminates when the NCM is transmitting data to the network
Illuminates when the microcontroller fails
Illuminates when +5VDC is available
: G F
ROUND AULT
E F A T E R M A
O F F
O N
S W 1 0 3 S W 1 0 0
:
NDICATORS
D iag no stic
L E D d etail
D
ETECTION AND
S ET U P
S W IT C H
D ET AIL
B H I
R C D B
P U L S E 1
ST AT B
P O W E R
L
INE
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