Siemens SINUMERIK 840D sl Function Manual page 32

A4: Digital and analog NC I/O for SINUMERIK 840D sl
2.2 Indirect I/O access via PLC
Slot addresses
Addressing of the digital I/Os:
● HW assignment for external digital inputs
MD10366 $MN_HW_ASSIGN_DIG_FASTIN[ <n> ] = <address
● HW assignment for external digital outputs
MD10368 $MN_HW_ASSIGN_DIG_FASTOUT[ <n> ] = <address
Addressing of the analog I/Os:
● HW assignment for external analog inputs
MD10362 $MN_HW_ASSIGN_ANA_FASTIN[ <n> ] = <address
● HW assignment for external analog outputs
MD10364 $MN_HW_ASSIGN_ANA_FASTOUT[ <n> ] = <address
<n>:
<address>:
Weighting factors for analog inputs/outputs
The weighting factor can be used to adapt each individual analog NC I/O to the AD or DA
converter of the analog I/O module used:
● Weighting factor for the analog NC inputs (see "Analog inputs (Page 41)"):
MD10320 $MN_FASTIO_ANA_INPUT_WEIGHT[<n>]
● Weighting factor for the analog NC outputs (see "Analog outputs (Page 44)"):
MD10330 $MN_FASTIO_ANA_OUTPUT_WEIGHT[<n>]
<n>:
Assignment to NC functions
The I/Os are required by several NC functions. The assignment of the I/Os used is performed
function-specifically via machine data, e.g. for the "Multiple feedrates in one block" function
via the machine data:
32
Index for addressing the external digital I/O bytes (0 ... 3) or the external ana‐
log I/Os (0 ... 7)
Slot address of the PROFIBUS/PROFINET module with 05 00 xxxx
05 Identifier for PROFIBUS/PROFINET module
00 Permanently assigned
xxxx Hexadecimal logical start address of the slot
H
0000 = no active slot
The following must be taken into account for logical start addresses
within the PLC process image (see References):
● Input slots: Reading from the NC also possible
● Output slots: Writing from the NC not permitted ⇒ alarm after run-
up of the NC
References
NCU 7x0.3 PN, NCU 7x0.3B PN Manual, Section "Technical data" >
Subsection "PLC" > "Process image size"
Detailed information can be found at Address
support.automation.siemens.com/WW/view/de/54058408)
Index for addressing the external analog I/Os (0 ... 7)
>
H
>
H
>
H
>
H
(http://
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions