Wireless Sensors, LLC
Ethernet Gateway Model GWAY-1100
Version 2.0 © July 2013
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The variable is in the middle window when it becomes less than or
equal to the high threshold minus hysteresis, or greater than or equal
to the low threshold plus hysteresis
It is in the low window when it is less than the low threshold
When a variable is read from a 1-Wire device, it is compared to these
values. If the new value from the 1-Wire device causes a change in
the windows, this generates a trap message with this information:
OID of
dTrapDeviceIndex.x
where x is the number of
dTrapDeviceTable
row that caused the trap. The numeric val-
ue is 1.3.6.1.4.1.3.1440.2.2.1.1.x.
The data type integer indicates which transition occurred:
o
1
– middle to high window transition
o
2
– high to middle window transition
o
3
– middle to low transition
o
4
– low to middle transition
If the high threshold is less than the low threshold, no traps
will be generated. Hysteresis is not checked for validity and
may be set to any value.
The high threshold, low threshold and hysteresis are stored as
float in the GWAY-1100, but are written as strings. This is be-
cause the SNMP V1 protocol makes no provision for a float.
Because of this, some numbers may be rounded, and are dis-
played with 3 digits of precision after the decimal point regard-
less of what the number actually is in the GWAY-1100.
The
owDevices
has the following branches:
o
owDeviceTypes
lists each device type supported. This branch is read
only.
o
owDeviceInfo
branch lists the number of devices connected
o
owDeviceTable
shows basic information about each device connect-
ed
o
These are the specific device tables, for example owDS18B20Table
defines the DS18B20. See the latest version of the EDS MIB file for
a list and description of the devices supported and their associated
parameters.
Telnet
Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional
interactive text-oriented communications facility using a virtual terminal connection. User data is
interspersed in-band with Telnet control information in an 8-bit byte oriented data connection
over the Transmission Control Protocol (TCP).
