30 • SMP Gateway User Manual
5.1.2 Creating a Master Protocol Instance Manually
To add a master protocol instance manually:
In the left pane, open the Master Protocols branch, to display the list of master protocols
provided under your product license.
In the left pane, click the protocol for which you want to add an instance.
The list of all defined master protocol instances appears in the right pane.
In the right pane, type the name of the new instance at the end of the list of names, and press
the Tab key on your keyboard.
The new protocol instance is added in the left pane, under the protocol type you had selected. If
you expand its tree branch and click an item, the corresponding protocol settings will be displayed
in the right pane. Note that if you click a physical data point type in the left pane, the right pane
will display an empty row since you will have to add the physical data points manually.
5.1.3 Configuring the Master Protocol General Settings
All master protocol components share common settings that define how they interact with a
device. The following procedure describes how to enter these settings. If you created the protocol
instance from a template, the general settings have been defined for you. However, you should
verify the settings to make sure they match your device configuration, and you should familiarize
yourself with the naming conventions discussed in this section.
In the left pane, click General to display the list of general settings for the selected protocol.
In the right pane, type a Device Prefix.
The string you enter will be used as a prefix for all the I/O point names of the device. It is
mandatory for each instance of a protocol. It is used to distinguish data point names that are
on the same device type, but on multiple physical devices. The device prefix ensures that
every data point name in the system is unique. Device prefixes are described in the following
section, “Adding Data Points from a Protocol Template”.
Device prefi
x and naming conventions
A typical substation automation project requires the configuration of thousands of data points.
You can significantly reduce the effort by carefully planning how to name devices and data points.
Cybectec tools provide additional functionality if the names of data points are based on some type
of convention. For our engineering projects, we use a naming convention such as the following:
A data source name, such as the substation name: MAPLE, CEDAR.
A voltage level: 220 or 25.
A device name: L1 to indicate a line, T1 to indicate a transformer, F1 to indicate a feeder,
BUS for a bus bar.
A signal name: V_phsA_mag to indicate the phase A voltage magnitude, A_phsA_mag to
indicate the phase A current magnitude, Pos_st to indicate the status of a breaker or a line
switch.
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