Campbell Scientific CR200/CR200X-series Dataloggers - Manual (Page 8)

Table of Contents
11.4.3 SDI-12 Power Considerations ............................................................... 118
11.5 Wind Vector ..................................................................................................... 120
11.5.1 OutputOpt Parameters ........................................................................... 120
11.5.2 Wind Vector Processing ........................................................................ 120
11.6 TrigVar and DisableVar - Controlling Data Output and Output Processing .... 125
11.7 Multiple Data Intervals in Data Tables ............................................................. 126
Section 12. Memory and Data Storage .................... 129
12.1 Data Storage ..................................................................................................... 129
12.1.1 Data Table Storage ................................................................................ 129
12.2 Memory Conservation ...................................................................................... 130
12.3 Memory Reset .................................................................................................. 130
12.3.1 Full Memory Reset ................................................................................ 130
12.3.2 Program Send Reset .............................................................................. 130
12.3.3 Manual Data Table Reset ...................................................................... 130
Section 13. Telecommunications and Data
Retrieval .................................................................. 131
13.1 Hardware and Carrier Signal ............................................................................ 131
13.2 Protocols ........................................................................................................... 132
13.3 Initiating Telecommunications ......................................................................... 132
13.4 Data Retrieval ................................................................................................... 132
13.4.1 Via Telecommunications ...................................................................... 132
13.4.2 Data Format on Computer ..................................................................... 132
Section 14. PakBus Overview .................................. 133
14.1 PakBus Addresses ............................................................................................ 133
14.2 Nodes: Leaf Nodes and Routers ....................................................................... 133
14.3 Router and Leaf Node Configuration ............................................................... 134
14.4 Linking Nodes: Neighbor Discovery ................................................................ 134
14.4.1 Hello-message (two-way exchange) ..................................................... 135
14.4.2 Beacon (one-way broadcast) ................................................................. 135
14.4.3 Hello-request (one-way broadcast) ....................................................... 135
14.4.4 Neighbor Lists ....................................................................................... 135
14.4.5 Adjusting Links ..................................................................................... 135
14.4.6 Maintaining Links ................................................................................. 136
14.5 Troubleshooting ................................................................................................ 136
14.5.1 Link Integrity ........................................................................................ 136
14.5.2 Ping ....................................................................................................... 137
14.5.3 Traffic Flow .......................................................................................... 138
14.6 LoggerNet Device Map Configuration ............................................................. 138
Section 15. Alternate Telecoms Resource Library ... 139
15.1 Modbus ............................................................................................................. 139
15.1.1 Overview ............................................................................................... 139
15.1.2 Terminology .......................................................................................... 139
15.1.3 Programming for Modbus ..................................................................... 140
15.1.4 Troubleshooting .................................................................................... 142
iv