Nemo_2

Hello Mich0,

would you mind telling us what huge Modus TCP Server you use?

With more than 10000 Inputs?

I have to admit, I would love to see this one. Until now, I have never seen such a thing.

Best regards

Nemo_2

 The concern over addresses above (3)9999 or (4)9999 is certainly valid because there are server devices that map above those 5-digit (N)9999 addresses. 

On another forum, someone was looking to read 0x4000, which is (4)16384, well above (4)9999 and his Client software would not read 6-digit addresses above (N)9999.

Frequently in 6 digit addressing there are large memory areas that not used, in some cases because a company tries to maintain a global map for different devices.  So device A maps in a certain region, device B maps above Device A, device C amps above A and B, etc.

Wireless gateways that can hold data from numerous field devices typically use 6 digit addressing, because each device can be allocated 0.5K of memory and the gateway can handle 128 field devices.

Sorry, I can't solve the problem, but the failure of a (somewhat out of date) Modbus client to be able to read a 6-digit Modbus address above (N)9999 is not uncommon .

Hello,

Mitch0

Hello!

I would like to read some modbus input words in the address range 30,001-39,999 with function 04 using the MB_CLIENT block. I got this working with MB_MODE = 104, but not with MB_MODE = 0.

According to the manual (Entry ID: 109742272), MB_MODE = 0 can be used to "Read 1 to 125 input words on the remote address 0 to 9,998".

Is there a possibility to read input words above register 9998? For holding registers, the same manual states that addresses 400,001 to 465,535 have to be used. Nothing seems to be mentioned for input words though. Is this supported by the MB_CLIENT block?

Thanks!

you have 2 options. One is that your actual TIA version (blocks) offer this option with specific MODE value or the 2-nd choice is you need create your own driver via OUC. But your this sentence is not clear to me:

I got this working with MB_MODE = 104, but not with MB_MODE = 0.

eeeehm you mean you are lucky with extended range with 104 mode? Very sry but your description is really hard to understand...