Vaisala Hydromet Data Collection Platform - Manual (Page 154)

User’s Guide ______________________________________________________________________
152 __________________________________________________________________M210785EN-E
Time Receiver
With the Time receiver function, you can set and read the system time
without opening a service connection. Add and connect the Time
receiver to a serial port in the Equipment view of Lizard Setup
Software. You can then set and read the system time through the serial
port using the command strings described below.
Setting System Time
To set the system time, give the following command:
<SOH> TIME <STX> YYYY MM DD HH MM SS <ETX>
<checksum>@
The system responds to the TIME command with
ACK
when the
command is executed successfully or
NAK
when the command fails. The
response is optional and you can disable it in the Measurements view
of Lizard.
The checksum is the 2-character 8-bit XOR calculated from the
characters between <STX> and <ETX>.
You should also enter the Time tolerance in Lizard. When the
difference between the system time and the new time setting is smaller
than the given Time tolerance, the system time is not adjusted but the
system responds with
ACK
.
Reading System Time
To read the system time, give the following command:
TIME <CR>
The response string is as follows:
?<STX>YYYY-MM-DD HH:MM:SS<ETX><checksum>@
The checksum is calculated as described above.