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H-335 – Xylem H-335 User Manual

Page 25

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H-335

SDI-12 Command and Response Protocol 2-9

Example of a "Change Sensor Address" command:

Command

Response

Description

"aA2!"

"2"

Change sensor address to "2"

2.9 Change Sensor Address

The Change Sensor Address Command allows the sensor address to be changed. The address is stored in

non-volatile EEPROM within the sensor. The H-335 will not respond if the command was invalid, the address

was out of range, or the EEPROM programming operation failed.

Command

Response

Description

"aAn!"

"n"

Change sensor address

Where:

a

is the current (old) sensor address ("0-9", "A-Z", "a-z", "*", "?"). An ASCII "*"

may be used as a "wild card" address if the current address is unknown and only one

sensor is connected to the bus.

A

is an upper-case ASCII character.

n

is the new sensor address to be programmed ("0-9", "A-Z", "a-z", "*", "?").

NOTE: To verify the new address use the "Identify Command."