User`s guide
LONWORKS FTT-10 Transceiver User’s Guide 6-5
CD through packet end No
Bit Sync Threshold 4.0 bits
Rcv Start Delay 9.0 bits (see note 1)
Rcv End Delay 0.0 bits
Indeterm Time 24.0 bits
Min Interpacket Time 0.0 bits
Turnaround 0 µsec
Missed Pream 4.0 bits (see note 2)
Use Raw Data? No
Notes:
1. For N repeaters in a packet path: Rcv Start Delay = 4.5 * (N + 1) bits.
2. For N repeaters in a packet path: Missed Pream = 2.0 * (N + 1) bits.
3. Use Differential mode when emulating a TP/FT-10 channel on the LonBuilder
backplane.
NodeBuilder Development Tool
The NodeBuilder development tool must be configured to use the TP/FT-10
channel by installing FTM-10 SMX transceivers on both the PCNSS card and the
LTM-10 target. Initial device development is done using the LTMRAM.DTM
device template to target the LTM-10 for the execution environment. NodeBuilder
development tool users must be aware that the LTM-10 has a 10MHz input clock.
If the hardware will run at a lower input clock rate, the design of the application
must be tolerant of the reduced execution performance.
Once the application has been developed, tested, and debugged on the LTM-10
target, a device template must be generated to match the final target hardware.
Success in generating the ROM image for the final custom hardware requires
careful attention to the device template definition. Follow these steps and refer to
chapter 5 of the NodeBuilder User’s Guide
5
and LONWORKS SMX Transceiver
Installation Instructions
9
.
1. Open the Device Template editor by pressing the Edit button for the Device
Template frame in the General tab of the Device window.
2. Carefully specify all fields for each tab in the Device Template editor for the
target hardware. Table 6.3 shows an example device template for the Echelon
Model 55030-01 TP/FT-10 control module. Common errors which must be
avoided include: Clock Speed mismatches the hardware, the Transceiver
Type is not selected, Neuron Chip model is not properly specified, Flash based
modules specify the wrong Flash sector size.
3. Select F ile, Save A s.. from the NodeBuilder menu to save the template
file.