7.12
SEL-2032 Communications Processor Instruction Manual Date Code 20120126
Settings
Automatic Message (SET A) Settings
➤ Define data parsing methods you want used on responses
received.
➤ Define conditions where data are archived in optional
nonvolatile memory.
You can create up to 12 automatic messages per port with the standard
SEL-2032 configuration. Eight of these message functions have an associated
data area to store responses, and the other four are for messages only. There
are three additional message functions associated with the nonvolatile Flash
memory, for a total of 15 possible message functions per port.
Automatic
Message
Operation
The messaging process is diagrammed in Figure 7.3.
Figure 7.3 Automatic Message Operation Functional Block Diagram
The SELOGIC control equation processor (Figure 7.3) detects the true or false
status of the trigger condition as defined in a SEL
OGIC control equation (using
the ISSUEx setting). When the condition becomes true, SEL
OGIC control
equation processor sets the Dx or ARCHx bit (depending on whether it is a
Data or Archive data region of the database involved) and causes the Message
Generator to issue the message that you have defined with the auto-message
setting. See Section 4: SEL
OGIC Control Equations for more details about
triggering.
The message issued may elicit a response. With the settings, you tell the
SEL-2032 what data to expect (including meter, ASCII floating point, and
integer) and how to parse, validate, and store the data. The data are then stored
in the appropriate region of the database and the Dx or ARCHx bit is cleared.
If a response is not expected, the Dx or ARCHx bit is cleared upon issue of the
triggered message. See Section 5: Message Strings for details on strings.
Response Data
Clear Dx
or ARCHx Bit
Data
Assert
Dx or ARCHx Bit
Any Database
Bit(s)
Time
Processor
SEL
OGIC
Control Equation
Processor
Detects
Assertion of
Trigger Condition
Message
Generator
Sends Triggered
Message
Input Handler
Parses and Stores
Response
Database
Dx or Ax
Region
Message
Response
EIA-232
Port
EIA-232
Port
Trigger
Courtesy of NationalSwitchgear.com
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