Standard test vector
CRC implementations are commonly verified with the ASCII input 123456789.
- Input format
- ASCII
- Input
- 123456789
- Expected CRC
- 0x3E
- Residue
- 0x00
CRC-8 / OPENSAFETY
Width8-bitRefInNoRefOutNoInput data9 bytesUTF-8 bytesText is converted to UTF-8 bytes.
Standard test string
Result
Similar CRC Algorithms
5 modelsBrowse all algorithms
Result is calculated from the current input. Check is the published verification value for the standard input 123456789. Click another algorithm to view its detail page.
CRC-8 / AUTOSAR
8-bitPoly 0x2FIn No Out No
Result
0xDF
Check
0xDF
CRC-8 / DVB-S2
8-bitPoly 0xD5In No Out No
Result
0xBC
Check
0xBC
CRC-8 / GSM-A
8-bitPoly 0x1DIn No Out No
Result
0x37
Check
0x37
CRC-8 / LTE
8-bitPoly 0x9BIn No Out No
Result
0xEA
Check
0xEA
CRC-8 / OPENSAFETY Current
8-bitPoly 0x2FIn No Out No
Result
0x3E
Check
0x3E
CRC Lookup Table
CRC-8 / OPENSAFETY · Poly 0x2F · Init 0x00 · XorOut 0x00 · 256 entries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 Source Code
CRC-8 / OPENSAFETY · Poly 0x2F · Init 0x00 · XorOut 0x00 · C · 56 lines
/*
* Model: CRC-8 / OPENSAFETY (8-bit)
* Poly: 0x2F, Init: 0x00, XorOut: 0x00
* CRC Table C Source Code & Lookup Table Generator
*/
#include <stdint.h>
#include <stddef.h>
const uint8_t crc_table[256] = {
0x00, 0x2F, 0x5E, 0x71, 0xBC, 0x93, 0xE2, 0xCD,
0x57, 0x78, 0x09, 0x26, 0xEB, 0xC4, 0xB5, 0x9A,
0xAE, 0x81, 0xF0, 0xDF, 0x12, 0x3D, 0x4C, 0x63,
0xF9, 0xD6, 0xA7, 0x88, 0x45, 0x6A, 0x1B, 0x34,
0x73, 0x5C, 0x2D, 0x02, 0xCF, 0xE0, 0x91, 0xBE,
0x24, 0x0B, 0x7A, 0x55, 0x98, 0xB7, 0xC6, 0xE9,
0xDD, 0xF2, 0x83, 0xAC, 0x61, 0x4E, 0x3F, 0x10,
0x8A, 0xA5, 0xD4, 0xFB, 0x36, 0x19, 0x68, 0x47,
0xE6, 0xC9, 0xB8, 0x97, 0x5A, 0x75, 0x04, 0x2B,
0xB1, 0x9E, 0xEF, 0xC0, 0x0D, 0x22, 0x53, 0x7C,
0x48, 0x67, 0x16, 0x39, 0xF4, 0xDB, 0xAA, 0x85,
0x1F, 0x30, 0x41, 0x6E, 0xA3, 0x8C, 0xFD, 0xD2,
0x95, 0xBA, 0xCB, 0xE4, 0x29, 0x06, 0x77, 0x58,
0xC2, 0xED, 0x9C, 0xB3, 0x7E, 0x51, 0x20, 0x0F,
0x3B, 0x14, 0x65, 0x4A, 0x87, 0xA8, 0xD9, 0xF6,
0x6C, 0x43, 0x32, 0x1D, 0xD0, 0xFF, 0x8E, 0xA1,
0xE3, 0xCC, 0xBD, 0x92, 0x5F, 0x70, 0x01, 0x2E,
0xB4, 0x9B, 0xEA, 0xC5, 0x08, 0x27, 0x56, 0x79,
0x4D, 0x62, 0x13, 0x3C, 0xF1, 0xDE, 0xAF, 0x80,
0x1A, 0x35, 0x44, 0x6B, 0xA6, 0x89, 0xF8, 0xD7,
0x90, 0xBF, 0xCE, 0xE1, 0x2C, 0x03, 0x72, 0x5D,
0xC7, 0xE8, 0x99, 0xB6, 0x7B, 0x54, 0x25, 0x0A,
0x3E, 0x11, 0x60, 0x4F, 0x82, 0xAD, 0xDC, 0xF3,
0x69, 0x46, 0x37, 0x18, 0xD5, 0xFA, 0x8B, 0xA4,
0x05, 0x2A, 0x5B, 0x74, 0xB9, 0x96, 0xE7, 0xC8,
0x52, 0x7D, 0x0C, 0x23, 0xEE, 0xC1, 0xB0, 0x9F,
0xAB, 0x84, 0xF5, 0xDA, 0x17, 0x38, 0x49, 0x66,
0xFC, 0xD3, 0xA2, 0x8D, 0x40, 0x6F, 0x1E, 0x31,
0x76, 0x59, 0x28, 0x07, 0xCA, 0xE5, 0x94, 0xBB,
0x21, 0x0E, 0x7F, 0x50, 0x9D, 0xB2, 0xC3, 0xEC,
0xD8, 0xF7, 0x86, 0xA9, 0x64, 0x4B, 0x3A, 0x15,
0x8F, 0xA0, 0xD1, 0xFE, 0x33, 0x1C, 0x6D, 0x42
};
uint8_t calculate_crc(const uint8_t *data, size_t length) {
uint8_t crc = 0x00;
for (size_t i = 0; i < length; i++) {
#if 0
uint8_t idx = (uint8_t)(crc ^ data[i]);
crc = (crc >> 8) ^ crc_table[idx];
#else
uint8_t idx = (uint8_t)((crc >> 0) ^ data[i]);
crc = (crc << 8) ^ crc_table[idx];
#endif
}
return crc ^ 0x00;
}About CRC-8/OPENSAFETY
CRC-8/OPENSAFETY is used in openSAFETY communication profiles.
CRC-8/OPENSAFETY is a 8-bit CRC model defined by polynomial 0x2F, an initial register value of 0x00, and final XOR 0x00. It uses normal, non-reflected input and output processing.
Documented application context for this model includes openSAFETY, Industrial safety, Fieldbus. The calculator above applies this exact parameter set to the current input; the published Check value below is instead the fixed verification result for ASCII 123456789.
Model characteristics
A model is identified by its complete parameter set, not its polynomial alone.
- Bit order
- Normal
- Register start
- 0x00
- Final XOR
- 0x00
- Published check
- 0x3E
Implementation checks for CRC-8/OPENSAFETY
- Use a 8-bit register and polynomial 0x2F.
- Initialize the register to 0x00 and use XorOut 0x00 exactly as listed; changing either value defines a different model.
- Verify the implementation with ASCII “123456789”; the expected result is 0x3E.
Continue with the main calculator, browse the algorithm catalog, compare models in the Algorithm Reference section, or generate a lookup table.
Complete CRC-8/OPENSAFETY parameters
| Parameter | Value | Meaning | Reference |
|---|---|---|---|
| Width | 8 bits | CRC register and result width | Read guide |
| Poly | 0x2F | Generator polynomial without the leading term | Read guide |
| Init | 0x00 | Initial CRC register value | Read guide |
| RefIn | No | Reflect each input byte before processing | Read guide |
| RefOut | No | Reflect the register before XOR Out | Read guide |
| XorOut | 0x00 | Final value XORed with the CRC register | Read guide |
| Check | 0x3E | CRC of ASCII “123456789” | Read guide |
| Residue | 0x00 | Expected residue after appending a valid CRC | Read guide |
AliasesopenSAFETY CRC-8
Where CRC-8/OPENSAFETY is used
- 01openSAFETY
- 02Industrial safety
- 03Fieldbus
CRC-8/OPENSAFETY FAQ
What is the check value for CRC-8/OPENSAFETY?
For the standard ASCII test input 123456789, the check value of CRC-8/OPENSAFETY is 0x3E.
What polynomial does CRC-8/OPENSAFETY use?
CRC-8/OPENSAFETY uses the 8-bit polynomial 0x2F.
Does CRC-8/OPENSAFETY use reflected input and output?
For CRC-8/OPENSAFETY, RefIn is No and RefOut is No.
What is CRC-8/OPENSAFETY commonly confused with?
CRC-8/AUTOSAR uses the same polynomial (0x2F), which is the usual source of mix-ups — matching the polynomial alone does not reproduce CRC-8/OPENSAFETY. The two models differ in initial value and final XOR value, so a port from one to the other needs those fields checked explicitly, not just the poly.