ET-7000/PET-7000 AIO Series User Manual, version 1.0.1 beta3 Page: 14
Copyright © 2009 ICP DAS Co., Ltd. All Rights Reserved. E-mail: [email protected]
Built-in Dual Watchdog
The Dual Watchdog consists of a Module Watchdog and a Host Watchdog.
Module Watchdog
is a built-in hardware circuit that can be used to monitor the
operation of the module and will reset the CPU module if a failure occurs in the
hardware or the software.
Power on value
(On boot up, the DO status is set to the Power-on value)
Host Watchdog
is a software function that can be used to monitor the operating
status of the host, and is used to prevent network communication problems or host
failures.
Safe value
(If Modbus/TCP communication is lost for a certain period, the DO
status will be set to the user defined safe value)
Ventilated Housing Designed to Operate Between -25 °C to +75 °C
PET-7000/ET-7000 is housed in a plastic-based shell/case with a column-like
ventilator that helps to cool the working environment inside the shell/case and
allows PET-7000/ET-7000 to operate at temperatures ranging from -25 °C to +75
°C.
I/O Pair Connection
This function is used to
create a DI to DO pair
through the Ethernet.
Once the configuration is
completed,
PET-7000/ET-7000
module can to
continuously poll the
status of remote DI
device using the Modbus/TCP protocol and then write to
local DO channels in the background.
