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Communications parameters – Echelon LonWorks Router User Manual

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Communications Parameters

Table , 24, 25, and Table together list the communications parameters for

L

ON

W

ORKS

routers.

Table 23. Communications Parameters, Part 1

Parameter

TP/XF-78

TP/XF-1250

TP/FT-10

TP/RS485-39

Transceiver ID

1 (0x01)

3 (0x03)

4 (0x04)

5 (0x5)

Media

Isolated

Twisted Pair

Isolated

Twisted Pair

Free Topology

or Link Power

EIA-485

Twisted Pair

Neuron Chip to

Transceiver Interface

Differential

Differential

Single Ended Single Ended

Interface Bit Rate

78 kbps

1.25 Mbps

78 kbps

39 kbps

Input Clock

10 MHz

10 MHz

10 MHz

10 MHz

Minimum Clock

Configurable;

default = 5

MHz

Configurable;

default = 10

MHz

Configurable;

default = 5

MHz

Configurable;

default = 5

MHz

Number of Priority Slots

Configurable;

default = 4

slots

Configurable;

default = 16

slots

Configurable;

default = 4

slots

Configurable;

default = 4

slots

Average Packet Size

Configurable;

default = 15

bytes

Configurable;

default = 15

bytes

Configurable;

default = 15

bytes

Configurable;

default = 15

bytes

Oscillator Accuracy

200 ppm

200 ppm

200 ppm

200 ppm

Oscillator Wakeup

0 µsec

0 µsec

0 µsec

0 µsec

Collision Detect (CD)

No

No

No

No

CD Term after Preamble N/A

N/A

N/A

N/A

CD through Packet End

N/A

N/A

N/A

N/A

Bit Sync Threshold

5 bits

7 bits

4 bits

4 bits

Hysteresis

2

0

N/A

N/A

Filter

1

0

N/A

N/A

Network Bit Rate

78 kbps

1.25 Mbps

78 kbps

39 kbps

110

Communications Parameters for LONWORKS Routers