Input Description¶
CANOM_SDO_READ
EN
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| BOOL | FALSE | TRUE/FALSE | - |
The input EN has to be driven in edge triggered mode.
The execution of the Function Block is started with a positive edge on the input EN.
In the first call it evaluates its inputs and creates a local copy of them. Afterwards it starts its internal algorithm. It may take several PLC task cycles until it is executed.
Once the execution is completed DONE and its other outputs are set. To start the Function Block again a new positive edge on the input EN has to be applied.
SLOT
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| BYTE | 0 | 0 … 4 (6) | - |
At input SLOT, the Communication Module slot is specified which should be used by the Function Block.
The internal Communication Module always has the index 0. All external Communication Modules are serially numbered from right to left, starting with 1.
NODE
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| BYTE | - | 1…127 | - |
The Input NODE specifies the node ID of the slave.
OBJ_IDX
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| WORD | - | - | - |
Input OBJ_IDX is used to specify the object index of the object which is to be written.
SUB_IDX
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| BYTE | - | - | - |
Input SUB_IDX is used to specify the sub index of the object which is to be written.
DATA
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| DWORD | - | - | - |
The input DATA is used to provide the pointer to data structure of the object which is to be written.
OBJ_LEN
| Data_Type | Default_Value | Range | Unit |
|---|---|---|---|
| BYTE | 0 | 0 … 247 | Number of Bytes |
Input OBJ_LEN is used to specify the length of the object to be read from the CANOPEN slave.