CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
CR200/CR200X Series Dataloggers - Campbell Scientific
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Section 18. Troubleshooting<br />
Table 25. Math Expressions and CRBASIC Results<br />
Expression CRBASIC Expression Result<br />
0 / 0 0 / 0 NAN<br />
∞ - ∞ (1 / 0) - (1 / 0) NAN<br />
(-1) ∞ -1 ^ (1 / 0) NAN<br />
0 * -∞ 0 * (-1 * (1 / 0)) NAN<br />
±∞ / ±∞ (1 / 0) / (1 / 0) NAN<br />
1 ∞ 1 ^ (1 / 0) NAN<br />
0 * ∞ 0 * (1 / 0) NAN<br />
x / 0 1 / 0 NAN<br />
x / -0 1 / -0 NAN<br />
-x / 0 -1 / 0 NAN<br />
-x / -0 -1 / -0 NAN<br />
∞ 0 (1 / 0) ^ 0 1<br />
0 ∞ 0 ^ (1 / 0) 0<br />
0 0 0 ^ 0 1<br />
18.2 Communications<br />
18.2.1 RS-232<br />
Baud rate mis-match between the <strong>CR200</strong>(X) and datalogger support software is<br />
often the root of communication problems through the RS-232 port. Software<br />
settings should be set to a baud rate of 9600.<br />
18.2.2 Communicating with Multiple PC Programs<br />
A common practice is to monitor the performance of a <strong>CR200</strong>(X) using<br />
Devconfig or LoggerNet while the <strong>CR200</strong>(X) has an open connection to another<br />
copy of LoggerNet. For example, the main connection can be via RF while the<br />
performance monitoring is done via RS-232 port. This is a useful feature of the<br />
<strong>CR200</strong>(X). A problem often arises, however, in that the <strong>CR200</strong>(X) gets<br />
confused when attempting this via two different ports, from two different<br />
instances of the same PakBus® address, i.e. if LoggerNet and Devconfig have<br />
the same address.<br />
Note LoggerNet defaults to PakBus® address 4094. Devconfig is fixed at<br />
PakBus® address 4094.<br />
The solution is to change the PakBus® address in LoggerNet | Setup | Options |<br />
LoggerNet Pakbus Settings). If feasible, use PC200W or PC400 instead of<br />
Devconfig as each has a different default PakBus® address from LoggerNet.<br />
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