Savin P7026 Bedienungsanleitung PDF herunterladen (Seite 112)

PET-70216/ET-7026 User Manual, version 1.0.1 beta1, Page: 112

C.3. Safe Value

If the time of the Host PC losing Modbus/TCP communication with the module is

greater than the host WatchDog timer setting (called WDT timeout), the output of the

Digital and Analog channels is set to the Safe Value, and the count of the host WDT

events is increased by one.

AO address 40558 is the address of the Host WDT events. The value of the WDT

events will be not stored into EEPROM, and will return to 0 after the module is

rebooted. DO address 00515 is the first address of the Safe value and the total

number of channels depends on the type of module.

For example:

Address 00515 to 00518 records the Safe value for the 4-Channel

ET-7017/PET-7017.

Be careful to set the ON value to DO address 00432 to write the DO Safe value to the

EEPROM of the ET-7000/PET-7000 DO module after using Modbus commands (05

or 15) to change the Power ON value.

While the WDT timeout is set, the module can also receive the Modbus/TCP

commands (05, 06, 15 and 16) to change the DO or AO value without needing to

clear the host watchdog timeout value.

Configuration via Web page

Browse to the homepage of the ET-7000/PET-7000, and click the “Modbus I/O

Settings” link in the Configuration Section of the Main Menu tree.

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Savin P7026 Bedienungsanleitung Seite 112