Fx3U-128MT - modbus RTU - Holding Registers

[fabio_fabio]

Hi

I'm trying to set up Modbus RTU communication between FX3U PLC and a weigh module.

I would use the ADPRW command using 0X03 to read the 16 bit Holding Register but in the weigh module the Data Address/Holding Register of the value I want to get is 400047 - 400048.

How to translate the value in 16 bit?

 

Thanks,

Fabio

[Neverov]

https://pastenow.ru/09832ace3d720f810070bbd3ef6623e8

If these addresses are empty, check that in registers 46-49.

If these addresses are empty, check that in registers 46-49.
Somewhere I have seen this that they write 40,000+ and in fact 0+.

[fabio_fabio]

@ Neverov, 

I don't get it. 

 

Pag 27.  https://www.aandd.jp/products/manual/balances/ad4212l.pdf   I have the data address where values from the slave can be read.

The address of the value I need is 6 digit. Are you suggesting to drop one zero then convert from hex to binary?

[Neverov]

1 hour ago, fabio_fabio said:

@ Neverov, 

Я не понимаю. 

 

Стр. 27.   https://www.aandd.jp/products/manual/balances/ad4212l.pdf У    меня есть адрес данных, по которому можно прочитать значения с ведомого устройства.

Адрес нужного мне значения - 6 цифр. Вы предлагаете сбросить один ноль, а затем преобразовать его из шестнадцатеричного в двоичный?

Sorry I didn't one zero.
Drop 4.
Look at registers 46-49.

If you are reading DWORD register. It happens that LOW WORD and High WORD are reversed.

An example from the manual on INVERTER FR-A800

https://pastenow.ru/ab746a0c4d9d4980d928e7944c390553

 

p.s. Sorry, but the site still does not allow image attachments.

Edited May 26, 2021 by Neverov