MDT data type (nc_ref)
This specifies which output data type the ident (ID) refers to.
Notice

The exact position of the datum on the PLC I/O interface is described in more detail in [SERC-S4// Mapping rules for SERCOS I/O data].
| Variable name | Type | permissible range | axis type | Dimension | 
| mdt[i].nc_ref | ISG_CHAR | 0 ≤ mdt_id[i] ≤ MAX(UNS16) | T | ---- | 
| 
 | 
 | 
 | R | ---- | 
| i | UNS16 | 0 ... [MAX_ID_ANZ - 1] | 
 | 
 | 
| Value MAX_ID_ANZ | Meaning | 
| 8 | Maximum size of SERCOS telegrams | 
ANALOG_OUT Analogue output
DIGITAL_OUT Digital output