Siemens LOGO! CMR2040 Operating Instructions Manual page 14

Application and functions
1.1 Application and communications functions
In stand-alone operation (see below) you can access the I/O via the inputs and outputs of
the CMR
The information can be read out and transferred by SMS message or e-mail. An event-based
notification via SMS message or e-mail is possible, see "Mobile wireless".
Mobile wireless
With the CMR, you establish a mobile data connection to a mobile wireless network: The
following specifications are supported:
● LOGO! CMR2020
Mobile wireless standards:
– GSM/GPRS
● LOGO! CMR2040
Mobile wireless standards:
– 4G (LTE)
– 3G (UMTS)
– 2G (GSM/GPRS/EDGE)
Fallback strategy:
If the establishment of a connection from the CMR2040 to the LTE network fails, the dial-
in falls back automatically to the next lower mobile wireless network (LTE > UMTS >
GPRS).
You will find the supported frequencies in the section Technical specifications (Page 141).
You will find the country-specific wireless approvals in section Approvals (Page 145) and on
the following Internet page;
Link: (https://support.industry.siemens.com/cs/ww/en/ps/15383/cert)
GPS
The CMR can receive position data and the time of day of a GPS system.
HTTPS
On a configuration PC / smartphone / tablet you can use HTTPS to access the CMR. HTTPS
is supported on both interfaces of the CMR: LAN and WAN (mobile wireless)
Station structure with CMR
You can use the CMR with the following structures:
● CMR with BM
The CMR is connected locally to a BM via Ethernet. The CMR establishes the connection
to a mobile wireless network.
● Stand-alone operation
You can also operate the CMR in stand-alone mode: in other words without a connected
BM. To connect the I/O you use the two digital inputs and outputs of the CMR.
14
LOGO! CMR2020,
Operating Instructions, 10/2016, C79000-G8976-C356-03
LOGO! CMR2040