28 Client and Server architecture Page 129 of 142
MCS301 meter - product Manual 1.25 MetCom Solutions GmbH
The following restrictions apply for the SMS channel:
•
Only unconfirmed services can be used.
•
The SMS channel can only be used from/to the Pre-established client at HES side.
•
In direction to the meter the Broadcast Key must be used (if required by the
security policy).
•
In direction to the HES the Global Unicast Key must be used (if required by the
security policy).
The permissible activities in each client are presented in following table.
Client
Activities
Description
Public
Reading device
general
information
-
Accessible via remote communication and
local interface,
-
No security
-
Established using DLMS-OPEN (AARQ)
service
Management
Management and any
setting/action in device, plus
reading values
-
Accessible via remote communication and
local interface
-
With Authentication HLS (LLS backup).
Established using DLMS-OPEN (AARQ)
service
Pre-established
Unconfirmed application
layer services for
Set /
Action / Data
Notification
-
Accessible only via remote communication/
RS485
-
optical interface is not allowed
-
Always Established
Reading
Reading Parameters and
Energy data
-
Accessible via local interface with Security
-
Established using DLMS-OPEN (AARQ)
service With Authentication HLS (LLS backup)
Parallel Association Policies
The following policies are provided by the meter about establishing parallel association.
•
On the local communication port (IEC 62056-21) only one association can be
opened at a time.
•
On remote communication port (IP) several associations can be opened parallel
•
At different communication ports, several associations (with the same client or with
different clients) can be opened at the same time.
•
If a client wants to use several communication ports at the same time an
association at each communication port will be opened separately.
Note:
If a client wants to use several communication ports at the same time it must open
an association at each communication port separately.
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