Before you start
Before you begin, make sure:
The Landis+Gyr ZMD4xx meter and CU-XE 211 communication module are physically installed and powered on
You have admin credentials for the CU-XE 211 management web portal
You have the scaling factors for the voltage and current transformers installed at the site
The CU-XE 211 is updated to the latest software version
Step-by-Step Instructions
1. Connect the meter to the network
The Landis+Gyr ZMD4xx meter communicates via the CU-XE 211 communication module. The CU-XE 211 connects to the local network via its data Ethernet port.
Connect an Ethernet cable from the CU-XE 211 data port to the local network switch or router
Verify the connection is established by checking the LED indicators on the CU-XE 211
For network infrastructure requirements and troubleshooting, see Infrastructure requirements for the gateway.
2. Access the meter settings
Open a browser on your device
Navigate to the CU-XE 211 communication module's web portal
Log in using the admin credentials
3. Enable communication via Modbus
Navigate to:
Servers → Modbus ConfigConfigure the following Modbus settings:
Modbus TCP port:
1502Byte order:
CDAB
Save the settings
4. Configure DLMS client settings
Navigate to:
Clients → DLMS ConfigConfigure the following DLMS settings:
Access security:
No Auth / Static Password / SHA-256Authentication:
[1] Low level authentication using static passwordMessage security:
DisabledExtended meter study:
Enabled
Configure the following Mappings with a mapper that matches the scaling factors for your installed transformers. Use Class
3and Polling group:Highfor all mappings:Active Power Sum:
1-1:16.7.0.255Reactive Power Sum:
1-1:131.7.0.255Apparent Power Sum:
1-1:9.7.0.255Active Power L1:
1-1:36.7.0.255Active Power L2:
1-1:56.7.0.255Active Power L3:
1-1:76.7.0.255Reactive Power L1:
1-1:151.7.0.255Reactive Power L2:
1-1:171.7.0.255Reactive Power L3:
1-1:191.7.0.255Apparent Power L1:
1-1:29.7.0.255Apparent Power L2:
1-1:49.7.0.255Apparent Power L3:
1-1:69.7.0.255Current L1:
1-1:31.7.0.255Current L2:
1-1:51.7.0.255Current L3:
1-1:71.7.0.255Voltage L1:
1-1:32.7.0.255Voltage L2:
1-1:52.7.0.255Voltage L3:
1-1:72.7.0.255Frequency:
1-1:14.7.0.255s/n:
0-0:42.0.0.255(OctetString to BitMapper, with Value Attribut2and Bit Number32)
Save the settings
5. Configure Modbus client settings
Navigate to:
Clients → Modbus ConfigConfigure the following Modbus settings:
Label:
gridX
Configure the following Mappings. Use Bank
inputand Formatfloatfor all mappings and ensure the scaling factors match your installed transformers:Active Power Sum: Address
0, Scaling0.04Reactive Power Sum: Address
2, Scaling0.04Apparent Power Sum: Address
4, Scaling0.04Active Power L1: Address
6, Scaling0.04Active Power L2: Address
8, Scaling0.04Active Power L3: Address
10, Scaling0.04Reactive Power L1: Address
12, Scaling0.04Reactive Power L2: Address
14, Scaling0.04Reactive Power L3: Address
16, Scaling0.04Apparent Power L1: Address
18, Scaling0.04Apparent Power L2: Address
20, Scaling0.04Apparent Power L3: Address
22, Scaling0.04Current L1: Address
24, Scaling40Current L2: Address
26, Scaling40Current L3: Address
28, Scaling40Voltage L1: Address
30, Scaling1Voltage L2: Address
32, Scaling1Voltage L3: Address
34, Scaling1Frequency: Address
36, Scaling1s/n: Address
38, Scaling1
Save the settings
6. Discover the meter in the commissioning wizard
The meter is now ready for the commissioning wizard. The gateway will scan the network to find available devices, which may take a few minutes. Once complete, the Landis+Gyr ZMD4xx meter will appear on the results page.
FAQ
Why isn't the meter appearing in the commissioning wizard?
Check that the CU-XE 211 data Ethernet port is connected to the local network and that the Modbus TCP port is set to 1502 with byte order CDAB. Confirm the laptop used for configuration has been disconnected from the management port. Restart the gateway and wait for the network scan to complete.
Why must the laptop be disconnected after configuration?
While a laptop is connected to the CU-XE 211 management Ethernet port, the meter pauses normal data transmission. Disconnecting the laptop restores regular meter operation so the gateway can receive measurement data.
What are scaling factors and where do I get them?
Scaling factors define the voltage and current transformer ratios for the installed measurement transformers at the site. They are required to correctly configure the DLMS mapping in the CU-XE 211. Obtain the scaling factors from the site documentation or from the metering operator.
What are the factory default login credentials?
The factory default username is admin with no password. Set a secure password after your first login.
What if I have forgotten the password?
Perform a factory reset on the device to restore the original factory state. Refer to the manufacturer's documentation for reset instructions.
Supported models
ZMD4xx