Mx37y_Technical_Description_ENG_v2.00.doc
24
─ Single- and three-phase electronic meters with built-in DLC
modem, GSM/GPRS modem or RS485 comm. interface
Fig. 30: Display legend, Mx371 (DLC)
Fig. 31: Display legend, Mx372 (GSM/GPRS, RS485)
4.8. AMR readout
To establish the system for automatic meter readout
(AMR) two basic components are required:
• A meter: Mx371 (Server),
• A concentrator P2LPC (Client).
Communication between the meter and the
concentrator is performed via a DLC modem that is
built in the meter and the concentrator.
For correct recognition of the meter by the
concentrator, some identification numbers that are
stated in the table below should be written.
CODE DESCRIPTION
1-0:0.0.0 Device number
0-0:96.1.0 Device factory number
0-0:128.0.0 DLC MAC meter number
0-0:128.0.3 Device unique ID
Co
mmunication is performed as follows:
P2LPC Mx371
1. Find_request[clientDLC,serverDLCnew]
2. Find_respond[serverDLCnew,clientDLC,DUID]
3. Install_request[clientDLC,serverDLC,DUID]
4. Install_respond[serverDLC,clientDLC,DUID]
5. Install_confirm[clientDLC,serverDLC,DUID]
A request for searching new installed meters in a
network has a DLC number P2LPC (0-0:128.0.0)
which is allocated within the range from 3072 to
4090.
The meter answers the request for searching with a
certificate which has a DLC number P2LPC (0-
0:128.0.0) and its own DUID number (0-0:128.0.3).
Before installation, P2LPC checks if the sent DUID
number (0-0:128.0.3) already exists. If it does, a new
DLC number is allocated (0-0:128.0.0) to just
obtained DUID number (0-0:128.0.3).
When connection between P2LPC and the meter is
established, the meter accessibility should be checked
periodically (“Fork”) in order to find out if the meter is
accessible for readout procedure. Up to ten successive
searchings of the meter can be defined.
If the meter does not respond even after the last
successive searching, “deinstallation” procedure is
started. When it is finished, a DLC number is
released (0-0:128.0.0) on the concentrator and is set
at the end of the table of available DLC numbers (0-
0:128.0.0) of the concentrator.
To Next Page
Loading...
