CompoBus/D Communications Card Operations | Chapter 5 | |
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HSetting Data for Operations and Parameter Constants
Read data and write data to be set for operations and parameters are calculated as shown below and then transmitted in hexadecimal.
•Convert to hexadecimal values with the operation/parameter minimum setting value as 1.
•Negative numbers are expressed as two’s complements.
•If the original data is already displayed in hexadecimal, it is transmitted as is.
Example 1
In this example, the frequency reference is 60 Hz, and the minimum setting unit is 0.01 Hz. 60/0.01 = 6000 → 1770 hex
Example 2
In this example,
50/0.1 = 500 → 01F4 hex
Bit reversal
+1
= FE0C hex
Example 3
In this example, “1F (hex)” is set for
HEnabling Parameter Setting Data by Enter Command
When setting (writing) data in parameter constants, be sure to send an enter command. After receiving the enter command, the Inverter will enable the data newly set in the parameter constants as operation data.
When setting (writing) data in more than one parameter, send an enter command once after completing all the settings. All the parameters newly set before the enter command is sent will be enabled.
Data type | Transmission | Inverter operation | Remarks |
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Enter command written in | Function code: 10 hex | When receiving an enter | Applicable to all the |
EEPROM | Register No.: FFFD hex | command, a series of | Inverter software. |
| parameter setting data |
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| Send data: 0000 hex |
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| will be stored in |
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| EEPROM and enabled |
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| as operation data. |
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Enter command not | Function code: 10 hex | When receiving an enter | Applicable to Inverters |
written in EEPROM | Register No.: FFDD hex | command, a series of | with software version of |
| parameter setting data | S1042 or later. | |
| Send data: 0000 hex | ||
| will be enabled without |
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| storing them in |
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| EEPROM. |
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| All the set data will be |
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| cleared to the initial data |
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| when the power is turned |
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| OFF. |
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