User manual

1-Wire Application Guide v1.04 Page 32 of 41
bus, make sure to disable wind direction reporting (which will allow the voltages
from the DS2450 to be visible) by using the EWN OFF command.
4.6 1-Wire Devices Not Supported by TEMP08
4.6.1 Moisture Sensor
Moisture sensors are available from some vendors as a DS2760-based device.
These devices are not compatible with TEMP08, however. Similar sensors can
be built using a DS2438 current sensor input, which would be supported by
TEMP08.
A Leaf Wetness Sensor is also available. It is not directly 1-Wire compatible, but
is connected through a Moisture Sensor, which means that it is not compatible
with TEMP08.
4.6.2 LCD Display
LCD display devices are available from some vendors with a DS2408-based 1-
Wire interface. There is no multi-vendor standard for this interface however and
TEMP08 does not support it.
4.6.3 1-Wire Hub
The 1-Wire Hub is a DS2409-based design and was originally conceived by
Simon Atkins (see References). This hub is typically used for very complex
networks of star and bus design, however is not always required. TEMP08 does
not support this device.
4.6.4 Thermocouple Sensor
AAG has a thermocouple sensor, which might be used to measure temperatures
much above the normal 1-Wire temperature sensor capability. Since this sensor
is based on the DS2760, it is not compatible with TEMP08.
4.7 Sensor Compatibility
Table 2 shows which sensors are compatible with our various products. NOTE:
the sensor compatibility does not imply that the connector pin-outs are
equivalent, only that the sensor is capable of being read and parameters
displayed.