Echelon LonWorks Router Manuale Utente Scaricare il pdf (Pagina 95)

LONWORKS Router Design Issues

This chapter examines a number of design issues, including

a discussion of PCB layout, electromagnetic interference

(EMI), and electrostatic discharge (ESD), for L

ONWORKS

routers.

ONWORKS Router User’s Guide 85

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 128 129

LONWORKS 1
Router 1
User’s Guide 1
Welcome 3
Audience 3
Related Documentation 3
Getting Support 4
FCC Notice 5
VDE Notice 5
Canadian DoC Notice 5
Table of Contents 7
ONWORKS Routers 11
LONWORKS Router Products 13
RTR-10 Overview 14
ONWORKS 15
LonWorks Router Based on the 17
Router 5000 17
FT Router 5000 17
ONWORKS router 18
Router Types 19
Repeater 19
Configured Router 19
Learning Router 20
Channel A 23
Router 1 Router 2 23
Channel B 23
Power Line Routers 23
PL Phase A 24
PL Phase B 24
Message Receiving Side 25
Message Sending Side 25
Direction of Message Flow 25
Router Performance 28
LONWORKS Router Electrical 31
Interfaces 31
Overview 32
Electrical Interface 32
RTR-10 Electrical Interface 32
ACLK2, BCLK1, and BCLK2 34
ACP[4..0] and BCP[4..0] 34
ASVC~ and BSVC~ 34
AXID[4..0] and BXID[4..0] 34
Note: RTR-10 Modules 36
SERVICE~ 37
Router 5000 Pinout 37
FT Router 5000 Pinout 39
Clock Pins (XIN and XOUT) 42
CP[4..0] – Router 5000 Only 44
IO[11..0] 46
SCL, and SDA_CS1~) 47
Power and Ground 47
RX Activity Indicator 54
TX Activity Indicator 54
Power Requirements 55
RTR-10 Power Requirements 55
Low Voltage Protection 56
LONWORKS Router Mechanical 59
Developing a LONWORKS Router 65
Using Custom Transceivers 68
Differential Driver Circuit 71
Comparator Circuit 72
Using an EIA-485 Transceiver 74
Using an FTT-10A Transceiver 75
GROUND GUARD 77
Input Output 89
NodeBuilder Device Template 91
Buffer Configurations 92
Example Neuron C Source 93
ONWORKS Router Design Issues 95
PCB Layout Guidelines 96
Power Supply 97
Circuitry 97
EMI Design Issues 99
Compatibility) 99
EMC Design Tips 99
ESD Design Issues 100
Installing a LONWORKS Router 103
Introduction 104
Defining a Network Topology 104
Connecting Power 105
Messages 106
Testing Router Installation 107
Network Management Messages 109
Standard Messages 110
Router-Specific Messages 111
Set Router Mode 112
Group Forward 113
Subnet Forward 114
Group No Forward 114
Subnet No Forward 114
Router Status 115
Far Side Escape Code 116
Set Routing Algorithm 116
Set Buffer Size 116
LONWORKS Routers 119
Communications Parameters 120
Determining RTR-10 Firmware 127
Version 127
Router Firmware Version 128

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