Parameterization - Siemens SINUMERIK 840D sl Function Manual

I/O modules can also be connected to the PROFIBUS DP/MPI interfaces X126 and X136. This
enables the number of digital and analog NC inputs/outputs to be expanded by 32 digital and
8 analog inputs and outputs respectively. These NC inputs/outputs are called external NC I/
Os in the following.
Table 2-1
References
For detailed information about the hardware, refer to:
● SINUMERIK 840D sl NCU Manual
● SIMATIC ET 200S FC Operating Instructions
See also
Direct I/O access via PLC (Page 54)
2.2.2

Parameterization

Machine data
Number of active NC I/Os
The number of active or from the NC usable digital NC I/O bytes are set in the following machine
data:
● Number of digital NC input bytes
MD10350 $MN_FASTIO_DIG_NUM_INPUTS = <number>
● Number of digital NC output bytes
MD10360 $MN_FASTIO_DIG_NUM_OUTPUTS = <number>
The number of active or from the NC usable analog I/Os are set in the following machine data:
● Number of analog NC inputs
MD10300 $MN_FASTIO_ANA_NUM_INPUTS = <number>
● Number of the analog NC outputs
MD10310 $MN_FASTIO_ANA_NUM_OUTPUTS = <number>
The I/Os do not have to actually exist in the hardware. In this case, the signal states or the
analog values are set to "zero" in a defined way inside the NC.
The values present at the I/O inputs can be changed from the PLC user program before they
are read by the NC.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Maximum number of digital and analog NC I/Os
Digital inputs
Digital outputs
Analog inputs
Analog outputs
A4: Digital and analog NC I/O for SINUMERIK 840D sl
Onboard
4
4
-
-
2.2 Indirect I/O access via PLC
NC I/O
32
32
8
8
Total
36
36
8
8
31