C.13
Date Code 20170927 Instruction Manual SEL-751 Relay
SEL Communications Processors
SEL Communications Processor Example
➤ 0000h/ indicates the first SEL-751 Remote Analog to begin
writing to (0000H = RA01 – 003EH = RA32)
➤ The \ and / frames the message.
See the SEL communications processor manual for more information
regarding the Unsolicited Write message string.
Following are 16-bit register data that are stored in the User region of Port 6
and sent to the SEL-751 on Port 3. Remember that F800H is synonymous with
the start of the USER region in the SEL communications processor. One
register stores one Integer and two registers store one Float or Long data type.
Setting the SEL-751
The SEL-751 interprets Remote Analogs as Integer, Float, or Long data types.
For correct remote analog data transfer, the data type sent from the SEL
communications processor must match the data type of each of the SEL-751
Remote Analogs. Use the RAnnTYPE settings (Report settings) to declare the
Remote Analog type (I = Integer, F = Float, L = Long). Assume in our
example we need only RA01 through RA12. In this example, we send
4 Integers, 4 Floats, and 4 Longs to the SEL-751. Figure C.6 shows the
correct settings for RA01 through RA13 accordingly, starting at RA01.
*>>VIE 6:F800h NR 20 <Enter>
6:F800h
7FFFh 8001h FFFFh 0000h 447Ah 25C3h C47Ah 270Ah
4516h B029h 4516h AFD7h 0001h 7FFFh FFFEh 8001h
FFFFh 6A00h FFFFh 0000h
Starting at register 0000h, the first 4 registers contain 4 Integer data values
7FFFh 8001h FFFFh 0000h
Starting at register 0004h the next 8 registers contain 4 Float data values
447Ah 25C3h C47Ah 270Ah 4516h B029h 4516h AFD7h
Starting at register 000Ch the next 8 registers contain 4 Long data Values.
0001h 7FFFh FFFEh 8001h FFFFh 6A00h FFFFh 0000h
*>>
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