NV-RAM copy shall be executed from non-safe application context.
Supported platforms: CODESYS 3.5 SAFETY
This FB provides NvRAM write and read access.
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NV-RAM copy shall be executed from non-safe application context. |
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Input variable name |
Data type |
Range |
Description |
|
i_Enable |
BOOL |
|
Write or Read operation is started when i_Enable is changed to TRUE. The program resets flag when init is started. |
|
i_NvRAMIndex |
DWORD |
Depends on HW. Indexing starts from 0. |
The index of the NvRAM used. |
|
i_WriteToNvRAM |
BOOL |
|
TRUE writes to NvRAM, FALSE reads from NvRAM. |
|
i_DestAdr |
DWORD |
≠0 |
Data address to write or read to. When writing the address in NvRAM. When reading the address on application side. |
|
i_ScrAdr |
DWORD |
≠0 |
Data address to write or read from. When writing the address on application side. When reading the address in NvRAM. |
|
i_Length |
DWORD |
>0 |
Length of data to write or read. |
|
Output variable name |
Data type |
Range |
Description |
|
o_Done |
BOOL |
|
TRUE indicates that the function block has completed processing. |
|
o_Busy |
BOOL |
|
TRUE indicates that the function block is still processing. |
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o_Error |
BOOL |
|
TRUE indicates that an error has occurred. |
|
o_ErrorId |
EPEC_SYSTEM. SYSTEM_ERROR_CODES |
|
Occurred error code. See details in system library's Data Types page. |
Application parameter NVMem implementation is included in SSeriesHardware library.
It is recommended to use non-volatile memory using Multitool Creator code template.
Source file topic100458.htm
Last updated 13-Jun-2024