User Guide
Table Of Contents
- 1. General
- 2. LonWorks C4 Option Board Technical Data
- 3. LonWorks Fieldbus C4 Option Board Layout and Connections
- 4. Installation of Honeywell NX LonWorks C4 Option Board
- 5. Commissioning
- 6. LonWorks Interface
- 7. Fault Tracking
- 8. Appendix 1
- 9. General Info
- 10. BACnet CJ Option Board Technical data
- 11. Bacnet Fieldbus CJ Option Board Layout and Connections
- 12. Grounding Cable Shield
- 13. Led Indications
- 14. Installation of Honeywell NX BACnet CJ Option Board
- 15. Commissioning
- 16. Fault Tracking
12 LonWorks Layout and Connections Honeywell
3.3 Bus Termination Resistor
To assure a proper data transmission, termination of the network segments is required.
Depending on the type of network, either one or two terminations are necessary. Free
topology network segment requires only one termination whereas a doubly terminated bus
topology requires two.
The jumper X5 on the Honeywell LonWorks C4 option board must be set accordingly. Use
94-ohm termination resistance when only one termination is needed and 47-ohm for two
terminations.
Figure 11. Using jumper X5 to set the bus termination
3.4 Led Indications
The three LED indications next to the connector show the present statuses of the Neuron
(green H3), the LonWorks C4 option board (yellow H2) and the Fieldbus Module (green H1).
From the user's viewpoint, the first two are the most significant.
Figure 12. LED indications on the LonWorks C4 option board
H3 Neuron Service LED GREEN
H2 C4 Option Board Status YELLOW
H1 Bus Status GREEN
47
Ω
94
Ω
no termination
X5
21
22
23
H3
H2
H1
X5
lw1.fh8
21
22
23
H3
H2
H1
X5
lw1.fh8