Setup: I’m using B&R Automation Studio with standard FRM function blocks to read sensor data via RS232 (Module: CS1020). The setup follows the usual steps: FRM_open → FRM_gbuf → FRM_write → FRM_read. Working: Interface opens (FRM_open.status = 0) Telegram is sent correctly (FRM_write.status = 0)…

Hello everyone, I finally managed to read data from the sensor! I’m now sending the request as a string and simply appending CR LF at the end. The issue was actually a combination of multiple problems: The telegram termination was incorrect The response needed to be read very quickly – I had to…

[image] Stephan Herbig: I suggest using the example from Automation Studio for the DVFrame library. Since the frame end identifier is known, I would use the delimiter. [image] Hallo Stephan As shown in the picture, I’m already following this procedure. Unfortunately, I’m not receiving any …

Hi, as I understood, the sensor only sends response after having received a valid request, right? And if you’re sending the request to the terminal software instead of to the sensor, the request is received by the software and you can send manually a response which is received by the PLC? If this…

Some general remarks. Did you define cyclic streaming as function model for the X20CS1020? What cycle time is defined for the X2X cycle time and is the CPU Timer linked to the X2X-interface ?

My module is configured to use the functional model ‘Stream’.

You must first convert hex string to long and then cast it to float for instance in a c-program. #include <bur/plctypes.h> #ifdef _DEFAULT_INCLUDES #include <AsDefault.h> #endif #include <stdio.h> #include <stdlib.h> void _CYCLIC ProgramCyclic(void) { const char *hex_string = “1A3F”; long…

[image] Corne Geerts: You must first convert hex string to long and then cast it to float for instance in a c-program. and in Structured Text ? I don’t have strtol.

just pack the C code into a library. #include <bur/plctypes.h> #include <stdio.h> #include <stdlib.h> #ifdef __cplusplus extern "C" { #endif #include "hexlib.h" #ifdef __cplusplus }; #endif float hex2real(plcstring* hex_string) { UDINT hex_value = strtoul(hex_string, NULL, 16); retur…

[2025_04_01_10_38_27-Docklight V2.4 (Eval)]I would like to know the name of this software used for verifying data transmission. As shown in the picture.

The software is called Docklight. It can be downloaded for free and is very easy to use. I hope it helps you. Downloads Dockligt

RS232 Communication Issue – No Data Received (FRM_read status = 60)

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stephan.herbig (Stephan Herbig) April 2, 2025, 6:05am 2

Hello Rene,

I suggest using the example from Automation Studio for the DVFrame library. Since the frame end identifier is known, I would use the delimiter.

Gruß
Stephan

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RS232 Communication Issue – No Data Received (FRM_read status = 60)

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