58
F.2 Example of a Four Datalogger Networking Session
1)
This session assumes that there are four dataloggers running at five second scan intervals.
2)
Press <ENTER> to wake the dataloggers from sleep. At this point, each datalogger is
“listening” for its network address to be transmitted down the RS-485 bus.
3)
To communicate with Datalogger #1 and observe several readings, type #1<ENTER>.
Datalogger #1 returns:
Network address: 1
*
1,2009,3,9,16,25,0,2.98,24.6,14.8114,20.5,1059
1,2009,3,9,16,25,5,2.98,24.7,14.8114,20.4,1060
1,2009,3,9,16,25,10,2.98,24.7,14.8114,20.5,1061
*E
Note that the datalogger ID, which is the first entry for each ASCII character string,
corresponds to the network address.
This should be set by the user during initial
datalogger setup via the ID command
.
Typing E<ENTER> puts the datalogger back to sleep and disconnects it from the RS-485
bus. The datalogger will continue to wake up periodically (scan rate setting) to take a data
reading.
The E command must be used in order to disconnect from the current
datalogger and allow connection to the next datalogger
.
4)
To communicate with Datalogger #2 and observe several readings, type <ENTER> to wake
the dataloggers and then type #2<ENTER>. Datalogger #2 returns:
Network address: 2
*
2,2009,3,9,16,23,25,2.95,24.7,14.8009,20.4,1040
2,2009,3,9,16,23,30,2.96,24.7,14.8009,20.4,1041
*E
5)
Doing the same for Datalogger number three and four results in:
Network address: 3
*
3,2009,3,9,16,30,0,2.98,24.7,14.8116,20.5,1102
3,2009,3,9,16,30,5,2.98,24.7,14.8114,20.5,1103
*E
Network address: 4
*
4,2009,3,9,16,31,26,2.96,24.8,14.8110,20.4,1115
4,2009,3,9,16,31,31,2.96,24.8,14.8111,20.4,1116
*E
