SMV control block - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - IEC 61850 Engineering Guide - REX615 Protection and control - PCL1 - IEC - ANSI

Table 1. Sampled value control block attributes
SVCB attribute	Description
SVID	A SVCB-specific string. The default value is <IedName>MU01. Maximum SVID length is 129 characters, as defined in IEC 61850-9-2 Ed 2.1.
Multicast address	A multicast addressing scheme is used when sending sampled values messages. A multicast address can be shared by several sending devices or it can be IED specific. To keep the multicast message filtering of the devices working, it is recommended to use unique multicast addresses.
SVCB name	The name of the SVCB structure seen by the IEC 61850/MMS client
Data set	Data sent in sampled values messages to the network. Default dataset PhsMeas1 should not be changed.
ConfRev	ConfRev increases when the referenced data set is modified. Both the sampled values sender and the receiver must have the same ConfRev value. This ensures that both IEDs have the same configuration level in the substation configuration. ConfRev usage is done automatically by the tools. If the latest system configuration is not downloaded into all required IEDs, the configuration revision may differ between the receiver and sender.
MAC Address	Multicast MAC address to which the sampled values data is sent. The receiving IED filters the frames and starts to process them if a multicast address is defined in the configuration. It is recommended to have one unique multicast address per SVCB. The address range for sampled values multicast addresses is 01-0C- CD-04-00-00...01-0C-CD-04-01-FF.
APPID	Unique HEX value application identifier for sending the SVCB within the system. It identifies the purpose of a data set. The value range for sampled values is 0x4000...0x7FFF. ¹
VLAN-ID	Used if the Ethernet switches in a station bus support VLAN. If static VLAN identifiers are defined, it also affects the switch port configuration. Value “000” indicates a non-configured VLAN and switches do not filter these messages on a port basis. This is recommended if there is no need to split the logical network. The VLAN identifier is a three-character HEX value with range 000...FFF. The recommended values are 2...1001.
VLAN Priority	Used in networks supporting VLANs. The priority is used with network switches. The default value for sampled values is “4” and the value range is 0...7.
Sample Rate	Amount of samples per period
NoAsdu	Number of ASDUs, which are concatenated into one APDU
IncludeSampleRate	If selected SV buffer contains the attribute “SmpRate”
Master Clock ID	If selected SV frame contains the grandmaster id of the SMV sender. That is, the IEC 61850-9-2 option "gmIdentity".

Note: Modify only MAC address, VLAN ID and sampled value ID to keep the 9-2 LE compliancy. Default SMV properties are 9-2 LE compliant.

Note: Use a unique APPID and/or destination MAC for each SMV stream to ensure that always the correct SMV stream is received and used by the application. It is also highly recommended to use unique MAC addresses to fully benefit from the network filters. Having multiple SMV streams with the same destination MAC+APPID in the system, can result in faulty SMV handling in the devices.

Note: IEC61850-9-2 SV option "Samples synchronized" is mandatory for proper operation if SV cannot be disabled.

¹ To be scrictly compliant with 9-2LE, check that relay APPID is set to 0x4000. Configuration tool gives incrementing APPIDs if multiple SMV senders are configured within the same project.