1 Scope
This part of IEC 62056, which is a Technical Specification, defines how DLMS/COSEM servers can be accessed
from a COSEM Access Client via an intermediate COSEM Access Service (CAS) providing
Web services. The DLMS/COSEM server contains an application server supporting the
data model of IEC 62056‑6‑1 / IEC 62056‑6‑2 and the application layer of IEC 62056‑5‑3. The underlying communication layers between the CAS and the DLMS/COSEM server are
not covered by this specification. However, it is assumed that a profile standard
exists describing how the underlying communication technology is used in conjunction
with IEC 62056‑6‑1/ IEC 62056‑6‑2 and IEC 62056‑5‑3.
The Web services defined in this Technical Specification concern the G2 interface
according to the architecture defined in IEC 62056‑1‑0.
The contents of this document define the Web services between the COSEM Access Client
and the COSEM Access Service (CAS) as shown in Figure 1.
Figure 1
—
Reference model for the COSEM Access Client to DLMS/COSEM server connection via a
COSEM Access Service
The COSEM Access Client identifies the DLMS/COSEM server by its system title (see
IEC 62056‑5‑3).