Hi,

I am using modbus tcp/ip for reading a multiple phase meter. Because I have to specify the IP-address of the meter the datataker is logging in each time I read the meter. Is there a way to avoid logging in each time when the datataker reads the meter?

Best Regards,
Friedrich Völlink

Hi Friedrich,

You may enable (LOGON) or disable logging (LOGOFF) for one schedule (i.e.: LOGONA, LOGOFFA) or multiple schedules (i.e.: LOGON, LOGOFF).
If you put those into function keys, you may choose when to log manually.

Best regards,
Rudy Gunawan

Hi Rudy,

That's not what I meant, the datataker is "logging in" each time I read the meter with modbus TCP/IP. After a while the meter goes down on this.

Best Regards,
Friedrich

Hi Friedrich,

Could you explain in detail about this about this 'logging in'? And why the meter goes down?

Do you mean you want to access multiple parameters in a single MODBUS syntax syntax?
Or you want to use a dynamic IP address for sensor?

Best regards,
Rudy Gunawan

Hi Rudy,

Let me explain what I want:

1. Connect to IP-address (logging in)
2. Read meter in loop
3. Disconnect IP-address (log off)

It looks like the datataker is performing steps 1 to 3 each time it executes the 4MODBUS(AD"10.23.0.4",.... command.

Best Regards,
Friedrich

Hi Friedrich,

Do you want to read all parameters before triggering disconnection? Have you try to use a MODBUS block read?
Is this meter actually a gateway to other sensors?

Best regards,
Rudy Gunawan