ICP DAS USA ET-7000 Series User Manual page 137

Appendix D: Modbus Application Notes


AO address 40557 of the ET-7000 series Modbus register is the address of the Host
Watchdog timer, and will be stored into EEPROM. The WDT function will be disabled if the
value is set to less then 5 seconds.
Power ON Value
If the ET-7000 series module is reset, the output of the module is set to the predefined Power
ON Value for the DO and AO channels. DO address 00435 of the ET-7000 series Modbus
register is the first address of the Power ON value, and the total number of channels depend
on the type of module.
For example:
Addresses 00435 to 00438 records the Power ON value for the 4-Channel ET-7017.
Be careful to set the ON value to DO address 00431 to write the DO Power ON value to the
EEPROM of the ET-7000 DO module after using Modbus commands (05 or 15) to change the
Power ON value.
Configuration via Web page
Browse to the homepage of the ET-7000, and click the "Modbus I/O Settings" link in the
Configuration Section of the Main Menu tree.
Click the ON/OFF radio box to set the power ON/OFF value and then click the
button to enable the settings to take effect.
ET-7000 AIO User Manual, Apr. 2009, V1.04, EMH-011-104
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