Configuration Data - CfgData
The CfgData describes the structure and length of the input and output data that is to be cyclically exchanged via Data_Exchange. There follows a description of the DP configuration data bytes
Bits 4-7 | Meaning |
|---|---|
0000B | Module without data. Bits 0-3 indicate how many bytes of manufacturer-specific data are still to follow |
0001B | Inputs of type byte, with no consistency. Bits 0-3 contain the length of the input data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 byte, while bits 0-3 = 1111B corresponds to a length of 16 bytes) |
0010B | Outputs of type byte, with no consistency. Bits 0-3 contain the length of the output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 byte, while bits 0-3 = 1111B corresponds to a length of 16 bytes) |
0011B | Inputs and outputs of type byte, with no consistency. Bits 0-3 contain the length of the input or output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 byte, while bits 0-3 = 1111B corresponds to a length of 16 bytes) |
0100B | A special identification format for inputs. A byte follows that describes the associated input data (see below). Bits 0-3 indicate how many bytes of manufacturer-specific data are still to follow |
0101B | Inputs of type word, with no consistency. Bits 0-3 contain the length of the input data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of one word, while bits 0-3 = 1111B corresponds to a length of 16 words) |
0110B | Outputs of type word, with no consistency. Bits 0-3 contain the length of the output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 word, while bits 0-3 = 1111B corresponds to a length of 16 words) |
0111B | Inputs and outputs of type word, with no consistency. Bits 0-3 contain the length of the input or output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 word, while bits 0-3 = 1111B corresponds to a length of 16 words) |
1000B | A special identification format for outputs. A byte follows that describes the associated output data (see below). Bits 0-3 indicate how many bytes of manufacturer-specific data are still to follow |
1001B | Inputs of type byte, with consistency. Bits 0-3 contain the length of the input data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 byte, while bits 0-3 = 1111B corresponds to a length of 16 bytes) |
1010B | Outputs of type byte, with consistency. Bits 0-3 contain the length of the output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 byte, while bits 0-3 = 1111B corresponds to a length of 16 bytes) |
1011B | Inputs and outputs of type byte, with consistency. Bits 0-3 contain the length of the input or output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 byte, while bits 0-3 = 1111B corresponds to a length of 16 bytes) |
1100B | A special identification format for inputs and outputs. A byte first follows that describes the associated output data, and then one describing the associated input data (see below). Bits 0-3 indicate how many bytes of manufacturer-specific data are still to follow |
1101B | Inputs of type word, with consistency. Bits 0-3 contain the length of the input data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of one word, while bits 0-3 = 1111B corresponds to a length of 16 words) |
1110B | Outputs of type word, with consistency. Bits 0-3 contain the length of the output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 word, while bits 0-3 = 1111B corresponds to a length of 16 words) |
1111B | Inputs and outputs of type word, with consistency. Bits 0-3 contain the length of the input or output data minus 1 (i.e. bits 0-3 = 0000B corresponds to a length of 1 word, while bits 0-3 = 1111B corresponds to a length of 16 words) |
If the first byte has the type "special identification format", then the second or third bytes have the following meaning:
Bits 6-7 | Meaning |
|---|---|
00B | Type byte, with no consistency. Bits 0-5 contain the length of the data minus 1 (i.e. bits 0-5 = 000000B corresponds to a length of 1 byte, while bits 0-5 = 111111B corresponds to a length of 64 bytes) |
01B | Type word, with no consistency. Bits 0-5 contain the length of the data minus 1 (i.e. bits 0-5 = 000000B corresponds to a length of 1 word, while bits 0-5 = 111111B corresponds to a length of 64 words) |
10B | Type byte, with consistency. Bits 0-5 contain the length of the data minus 1 (i.e. bits 0-5 = 000000B corresponds to a length of 1 byte, while bits 0-5 = 111111B corresponds to a length of 64 bytes) |
11B | Type word, with consistency. Bits 0-5 contain the length of the data minus 1 (i.e. bits 0-5 = 000000B corresponds to a length of 1 word, while bits 0-5 = 111111B corresponds to a length of 64 words) |