finslib_connection_data_read( sys, unitdata, start_unit, num_units );
Parameters
| Parameter | Type | Description |
|---|---|---|
sys |
struct fins_sys_tp * |
A pointer to a structure with the FINS context |
unitdata |
struct fins_unitdata_tp * |
A pointer to the location where the unit data read from a remote PLC must be stored |
start_unit |
uint8_t |
The first unit from which the unit information should be read |
num_units |
size_t * |
The maximum number unit information blocks to return. At function return this contains the actual number of unit information blocks read |
Return Value
| Type | Description |
|---|---|
int |
A return value from the list FINS_RETVAL_... indicating the result of the query |
Description
See Also
-
FINS_RETVAL...– Libfins function return code list finslib_cpu_unit_data_read();finslib_cpu_unit_status_read();