Reading all "Data" object type parameter together

By riteshP, 22 May, 2025
Forums
Gurux DLMS for ANSI C

Hi,

I can able to read individual Data type object. Using following methods.
Client.init(true, 32, 1, DLMS_AUTHENTICATION_LOW, "xxxx", DLMS_INTERFACE_TYPE_HDLC);

cosem_init(BASE(ldn), DLMS_OBJECT_TYPE_DATA, "0.0.42.0.0.255");
com_read(BASE(ldn), 2);

My Energy Meter has > 20 Data objects, All the objects i am able to read the values individually.
I want to read all DLMS_OBJECT_TYPE_DATA types available in a meter together instead of reading individual OBIS code.
How to read that in single read instead of multiple com_read?

Kurumi

7 months 3 weeks ago

Hi,

You can use ReadList for that. The meter's memory capacity is limited, so you may need to perform multiple reads.

BR,
Mikko

riteshP

7 months 3 weeks ago

Hi Kurumi,

Thanks for the Reply.

I am using following code to read 2 OBIS code using "com_readList"
I am getting no error. Seems like it's reading the data.
How to print the read data and clock value?

objectArray objects;
gxArray list;
gxClock clock1;
gxData ldn;

cosem_init(BASE(ldn), DLMS_OBJECT_TYPE_DATA, "0.0.0.1.0.255");
cosem_init(BASE(clock1), DLMS_OBJECT_TYPE_DATA, "0.0.1.0.0.255");

oa_init(&objects);
arr_init(&list);
arr_push(&list, key_init(&ldn, (void*)2));
arr_push(&list, key_init(&clock1, (void*)2));

com_readList(&list);

Kurumi

7 months 3 weeks ago

Hi,

The data type and OBIS code must be correct, or meter returns an error.

cosem_init(BASE(ldn), DLMS_OBJECT_TYPE_DATA, "CHANGE OBIS CODE");
cosem_init(BASE(clock1), DLMS_OBJECT_TYPE_CLOCK, "0.0.1.0.0.255");

You can convert object attributes to string like this:

obj_toString(BASE(clock1), buff);

BR,
Mikko