Echelon LONWORKS, Руководство пользователя, Страница: 64 / 68

*The input clock rate is 10MHz for these transceivers on the Model 61000 RTR-10 Router Core Module; the
input clock rate is 5MHz for these transceivers on the Model 71000 L
ON
W
ORKS
Router.
A-4 Communications Parameters
Parameter PL-20N PL-30
Transceiver ID 17 (11 hex) 18 (12 hex)
Media Power Line Power Line
Neuron Chip to Transceiver
Interface Special Purpose Special Purpose
Interface Bit Rate 156.3kbps 625kbps
Input Clock 10MHz 10MHz
Minimum Clock Configurable; default =
1.25MHz Configurable; default
= 5MHz
Number of Priority Slots Configurable; default =
8 slots
Configurable; default
= 12 slots
Average Packet Size Configurable; default =
15 bytes Configurable; default
= 15 bytes
Oscillator Accuracy 200ppm 200ppm
Oscillator Wakeup 0
µ
sec 0
µ
sec
Collision Detect (CD) N/A N/A
CD Term after Preamble N/A N/A
CD Through Packet End N/A N/A
Bit Sync Threshold N/A N/A
Hysteresis N/A N/A
Filter N/A N/A
Network Bit Rate 3987bps 1882bps
Alternate Rate N/A N/A
Wakeup Pin Direction Output Output
XCVR Controls Preamble Yes Yes
General Purpose Data 0E 01 00 00 00
00 00
00 8A 00 00 00
00 00
Allow Node Override No Yes
Receive Start Delay 6.8 bits 1.0 bit
Receive End Delay 1.6 bits 10.4 bits
Indeterminate Time 0.0 bits 0.0 bits
Min. Interpacket Time 17.5 bits 0.0 bits
Turnaround Time N/A N/A
Missed Preamble N/A N/A
Preamble Length 33.5 bits 36.7 bits
Use Raw Data No No