Hey y'all , hope you all doing well.

I have a little problem, please. In fact, I have a DSE7320 which is a generator controller and I want to access its datas on my plc. I've followed the siemens  turorial so that I'm using a ET200SP, and a CM PtP as the dse7320 supports rs485. 

I've connected the wires ( Transfer, receive and ground ) the right way, and I think I did the right way the config of the 02 blocks that I used (Modbus_comm_load and Modbus_master), But unfortunately, nothing.

The fun fact is, there is no error message, the status is 7000 which means no operations is processing I think , but sometimes the ''BUSY'' of my modbus_master block is switches to 1.

Please , could someone help me with this issue? 

I will put the snapshots in a ppt file just below because I didn't manage to send many files in a row.

Hey,

Thanks for the feedback. I don't know if it matters but it's a DSE 7320 MKII, and on the datasheet, there is MODBUS RTU (Either with RS232C or RS485). 
I stood on MODBUS RTU, because the device (DSE 7320 MKII) does not support MODBUS TCP.

Find attached please, the 2 pages data sheet. 

Thanks,

 Hello,

I don n't know this issue is closed or not yet.

Mostly the Engines control using CAN Bus system otherwise should get Data Register from manufacturer, But let me suppose that you have Data register address that you assigned, in this case you have to watch the IN configuration of Communication blocks,

In your project (REQ) For Modbus_Comm_Load should be Fist Scan Memory Bit, Or any Positive Edge Triger, Not Clock as you did.

and MB_DB reference to the instance data block of the Modbus_Master.

also you have to revise all REQ for Modbus_Master to prevent they of running simultaneously.

and try to avoid using Clock directly to REQ of Modbus_Master if you are using mor than one.

This response for whom may facing the same problem

Hope you got it.

AutomationCrack

Hey y'all , hope you all doing well.

I have a little problem, please. In fact, I have a DSE7320 which is a generator controller and I want to access its datas on my plc. I've followed the siemens  turorial so that I'm using a ET200SP, and a CM PtP as the dse7320 supports rs485. 

I've connected the wires ( Transfer, receive and ground ) the right way, and I think I did the right way the config of the 02 blocks that I used (Modbus_comm_load and Modbus_master), But unfortunately, nothing.

The fun fact is, there is no error message, the status is 7000 which means no operations is processing I think , but sometimes the ''BUSY'' of my modbus_master block is switches to 1.

Please , could someone help me with this issue? 

I will put the snapshots in a ppt file just below because I didn't manage to send many files in a row.

Hi

Modbus Master

Modbus address 10

Mode 0

Data address 41025

Data LEN 66

Modbus load ---> Mode 4 (into the DB) Baud 115200