Parse write command response

Hi,

I have a question about write method.

How parse the response sent by meter when I want write some object ?

For example, below are two write command sent to meter and these response. Both command response are similar but I don't know what to do with its.

Disconnect charge command:

Code:

GXDLMSDisconnectControl control = new GXDLMSDisconnectControl();

readDataBlock(control.remoteDisconnect(client), replyData);

System.out.println(GXCommon.bytesToHex(replyData.getData().getData()));

Meter Request: 7E A0 1E 00 20 00 23 23 32 8D 5A E6 E6 00 C3 01 C1 00 46 00 00 60 03 0A FF 01 01 0F 00 68 A6 7E

Meter Response: 7E A0 14 23 00 20 00 23 52 5C 5A E6 E7 00 C7 01 C1 00 00 FC B4 7E

Payload Response:
C7 01 C1 00 00

Change CLOCK Object, attibute 2:

Code:

Calendar cal = Calendar.getInstance();

readDataBlock(
client.write(
OBISObjectAddress.CLOCK,
cal.getTime(),
DataType.OCTET_STRING,
ObjectType.CLOCK,
2
),
replyData
);

Messages:

Meter Request: 7E A0 2A 00 20 00 23 23 54 81 E5 E6 E6 00 C1 01 C1 00 08 00 00 01 00 00 FF 02 00 09 0C 07 E7 03 16 03 0E 34 31 FF 00 B4 80 81 63 7E

Meter Response: 7E A0 13 23 00 20 00 23 74 70 D9 E6 E7 00 C5 01 C1 00 50 89 7E

Payload Response: C5 01 C1 00

What does it mean this message ? or where can I look into about this ?
Does it make sense try to parse this message ?

Thank you for your time.
Best regards.