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OPAL-RT's C37.118 slave I/O interface allows instantiating multiple C37.118 slave sessions that can be used to report data to a C37.118 master, which is typically a PDC (Phasor Data Concentrator). It has been implemented according to the IEEE Std C37.118.2-2011 standard. Using a standard network interface card, this protocol can be easily and rapidly integrated into any simulation model.

This driver provides an asynchronous TCP/IP communication interface and an IP aliasing mechanism allowing to assign different IP addresses to each slave/outstation instance even if a single physical network interface (i.e., ethernet port) is used.

C37.118 is the IEEE Standard for Synchrophasor Measurements for Power Systems, which defines synchrophasors, frequency, and rate of change of frequency (ROCOF) measurement under all operating conditions. It specifies methods for evaluating these measurements and requirements for compliance with the standard under both steady-state and dynamic conditions.

Platform Compatibility

Product Selection Guide

C37.118 Slave requires software license OP3271, which comes with 50 data points (Visit this website more information on data points). If additional data points are required, then they may be added via product OP3050. 

Since real-time simulators come with one available ethernet port, if additional physical ethernet ports are required on the real-time simulator, these can be added via kit. Note that for applications requiring many ethernet ports, the OP4510 platform is not recommended. 

C37.118 Slave can be added to real-time simulators without the need of additional hardware but a time synchronization modules to maintain high-precision synch and time stamping may be required depending on the application. For more information on precision timing, please visit the following page.

TypeProduct Number(s)OptionalDescriptionSimulator CompatibilityAdditional requirement(s)

Driver - C37.118 Slave communication protocol for PMU interface and synchrophasor communication - 50 data points included. Additional data points may be added with the OP3050 product.

  • OP3050-1000
  • OP3050-5000
  • OP3050-30000

License for additional I/O data points for Ethernet-based communication protocols. 1000, 5000 or 30000 (unlimited) data points may be added.

Add-on moduleOP3821

Dual-port PCI-E X1 Gigabit Ethernet Kit for OP4510 Real-Time Simulators. Can be added if more physical ethernet ports are required for Modbus TCP.

OP4510 requires its PCIe slot to be available
Add-on moduleI350T4V2BLK

Intel I350T4V2 Quad Port Ethernet Server Adapter 10/100/1000 Mbps. Can be added if more physical ethernet ports are required for Modbus TCP. 

Open PCIe slot required
Add-on module: Precision timing

See Precision Timing page

Time synchronization kit with 0.1 ppm oscillator. Supports IRIG-B, 1PPS, IEEE1588

For more information, including a full list of Precision Timing modules visit the following site.

Requires available slots. Note that OP4510 can only fit one add-on module.
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