
Make your CMC Future-Proof
In the interest of innovative and sustainable product care, we have continuously developed the CMC product family. In doing so, the options for communication with the test sets have been updated to the latest standards for a range of applications that has been continuously expanded.
Since 2014, all CMC test sets have been delivered with the current NET-2 communication interface. To enable older CMCs to communicate with modern PCs, tablets and various accessories via Ethernet, USB and Wi-Fi, we offer the ability to upgrade to the NET-2 hardware interface. The upgrade includes an ISO 9001 calibration by default and is available for the following CMC test sets:
- CMC 356
- CMC 256plus
- CMC 353
- CMC 310
- CMC 850
The NET-2 interface ensures the compatibility with upcoming Test Universe and RelaySimTest versions as well as a variety of additional benefits.
Please note: The compatibility with upcoming Test Universe and RelaySimTest versions for all older CMC interfaces (PAR-1, NET-1, NET-1B, NET-1C) are guaranteed until end of 2022.
Is your CMC Future-Proof?
To find out whether your CMC is already equipped with the NET-2 interface and compatible with upcoming Test Universe and RelaySimtest versions, simply enter the unit serial number in the field below. The serial number can be found, for example, on the nameplate under "SerNo", which is located on the housing.
All NET-2 Benefits

General
Continuous software updates
Support of future Test Universe and RelaySimTest versions.
Extended operating options
Control of the CMC test set via USB, Ethernet or Wi-Fi.
More memory for transient playback
Three times more memory for longer playback times of transient signals.
PoE (Power over Ethernet)
Various CMC accessories can be supplied with Power over Ethernet.
Full support of current CMC accessories
CMGPS 588, TWX1, EMCON 200, ISIO 200 and Wi-Fi USB Adapter.
IEEE 1588 PTP support
High-precision time synchronization of one or more CMC test sets.
Web interface
Browser-based user interface.
RelaySimTest
New advanced Transformer features
System-based-testing for transformer protection relays (requires license VESM6004).
New Local Sync feature
Synchronize multiple test sets without using an external clock.
IEC 61850 support
Test IEC 61850 protection systems using GOOSE and Sampled Values subscription/simulation.
CB Simulation improvements
New circuit breaker simulation mode and ISIO 200 support.
Test Universe
IEC 61850 support
Test IEC 61850 protection systems using GOOSE, Sampled Values and Client/Server Communication (MMS).
Improved Sampled Values simulation
New sampling rates according to IEC 61850-9-2LE and IEC 61869-9.
Power-Quality-Testing improvements
Higher accuracy for type testing class-A PQ meters according to IEC 62586.