Safety Guide

Instruction for GAT-1000
4.9 1-WIRE Interface:
1 WIRE can be connected to DS18B20 temperature sensor or the iButton to detect temperature
or detect which driver is on duty.
The device temperature signal can trigger a temperature alarm event, and the iButton signal
can trigger an iButton touch event.
The device can be connected to eight sensors at a time or one iButton. The cable for the
temperature sensor can be 20 meters long.
◇ GEM
Item Script Qualifier Description
Event
Subevent
OneWire_Chg ;
Triggers If there are data updates on the 1 wire.
In temperature mode: Triggers If there is a change in
the temperature, in range of 0.1 degree centigrade.
In iButton mode: Triggers If the iButton ID is
changed.
(No event on disconnection)
HW CONTROL 171 Set working mode
State
Status OneWire
Detect
True if any 1-wire device is connected on the bus,
otherwise it is false.
Status OneWire
DriverID
True if the recent iButton ID does not match.
(iButton ID is according to the parameter)
Action no
◇ AT Command
AT Command Description