Xylem H-3531 FlashLite - Manual (Page 63)

H-3531
SDI-12 Command and Response Protocol 5-25
5.20.4 H-355 Read/Write Purge Duration Command
This command is for reading the current purge duration and also for editing the purge
duration. The user can change the purge duration from 10 to 240 seconds. Refer to H-355
Gas Purge System manual for more details.
Command Response Description
“aXRPD!” “a0051” Read Purge Duration
“aXWPDddd!” “a0051” Write Purge Duration
Where: a is the sensor address ("0-9", "A-Z", "a-z", "*", "?").
XRPD are upper case characters.
XWPD are upper case characters.
ddd is the purge duration value desired(10-240).
This command takes 005 seconds to complete and places 1 value in the data buffer. Use
the “aD0" command to collect and view the current value.
Example of a H-3531 Extended "Read Purge Duration" command:
Command
Response Time Values Description
"aXRPD!" "a0051" 5 sec 1 Read Purge Duration
Command Response Description
"aD0!" "a+30" 30 seconds
Example of a H-3531 Extended "Write Purge Duration" command:
Command
Response Time Values Description
"aXWPD60!" "a0051" 5 sec 1 Write Purge Duration
Command Response Description
"aD0!" "a+60" 60 seconds