Power Electronics SD750 Series, Руководство по аксессуарам, Страница: 29 / 42

POWER ELECTRONICS SD750
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Parameters setting
Up next, the relevant parameters are summarized. For details about the range of values and Modbus
addresses, refer to the Software and Programming Manual for SD750 drives.
Subgroup 20.6: Custom Modbus configuration
Subgroup G20.6 of the SD750 drive allows configuring consecutive registers of the Modbus map:
Screen Range Function
Set on
RUN
G20.6.1 Custom
modbus addr 1 = 0
0 to 65535
These parameters allow configuring 120 consecutive registers (4500 to 4619) variables from the
Modbus map as required. This is particularly useful when designing a SCADA, so that the client
can consult several registers in a single reading operation.
They are grouped as follows:
•
Subgroup 20.6.1: Values 1 to 30
•
Subgroup 20.6.2: Values 31 to 60
•
Subgroup 20.6.3: Values 61 to 90
•
Subgroup 20.6.4: Values 91 to 120
In parameters G20.6.x, user must enter the Modbus registers (Modbus address – 40001) that will
be pointed to. Once configured, parameters G20.7.x can be used to read or write the value of
each register.
Example : Let us suppose we want to store the local speed reference (G3.3, Modbus 40053). We
must configure register 52 (40053 – 1) in G20.6.1, at Custom modbus addr1.
Then, in G20.7.1, Custom modbus val 1 we will read the current value of the local speed reference.
To modify it, we must enter the new value and save changes.
Note : When reading or writing a variable, keep in mind the type of variable and its Modbus range
to ensure values are interpreted correctly.
YES
G20.6.2 Custom
modbus addr 2 = 0
…
G20.6.120 Custom
modbus addr 120 = 0
Subgroup 20.7: Custom Modbus values
Subgroup G20.7 of the SD750 drive allows reading and writing the registers of consecutive G20.6
group records:
Screen Range Function
Set on
RUN
G20.7.1 Custom
modbus val1 = 0
0 to 65535
These parameters can be used to read and write the values of the registers that were previously
configured in G20.6. They are grouped as follows:
•
Subgroup 20.7.1: Values 1 to 30
• Subgroup 20.7.2: Values 31 to 60
•
Subgroup 20.7.3: Values 61 to 90
•
Subgroup 20.7.4: Values 91 to 120
Note : When reading or writing a variable, keep in mind the type of variable and its Modbus range
to ensure values are interpreted correctly.
YES
G20.7.2 Custom
modbus val2 = 0
…
G20.7.120 Custom
modbus val30 = 0