This is the first time i'm doing a Modbus Tcp project.
I have some VLT with a extension module MCA-122.
i'm currently unable to write to the VLT slave, but i can read from status word parameter=1603 and address := 16029 where the address is calculated from parameter is ((id x 10)-1).
in the manual the functions that are supported are 3 hex, 6 hex, 10 hex, b hex and 11 hex.
read holdin registers, write single register, write multiple registers, get comm. event counter, report slave id.
i'm only using the Modbus Slave Channel is this wrong when trying to write to the vlt ?
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Hi can you give more details?
Are you talking about a danfoss? wich model?
Can post the configuration of channel'
I used, on the past, serial modbus with danfoss fc280
I remember ((id x 10)-1)
I remember that you couldn't use continuous reading/writing of the directors but you had to use them one at a time.
it seemed that reading empty registers (caused by x10) was not accepted by danfoss.
So I had created a scan that used just one register, then the next etc etc with a timed interval.
But this was for the serial, I don't know if it's the same thing with ethernet.
I currently use Ethernet TCP/IP interface with FC280.
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Help wanted
This is the first time i'm doing a Modbus Tcp project.
I have some VLT with a extension module MCA-122.
i'm currently unable to write to the VLT slave, but i can read from status word parameter=1603 and address := 16029 where the address is calculated from parameter is ((id x 10)-1).
in the manual the functions that are supported are 3 hex, 6 hex, 10 hex, b hex and 11 hex.
read holdin registers, write single register, write multiple registers, get comm. event counter, report slave id.
Hi can you give more details?
Are you talking about a danfoss? wich model?
Can post the configuration of channel'
I used, on the past, serial modbus with danfoss fc280
I remember ((id x 10)-1)
I remember that you couldn't use continuous reading/writing of the directors but you had to use them one at a time.
it seemed that reading empty registers (caused by x10) was not accepted by danfoss.
So I had created a scan that used just one register, then the next etc etc with a timed interval.
But this was for the serial, I don't know if it's the same thing with ethernet.
I currently use Ethernet TCP/IP interface with FC280.