Lenze Global Drive PLC Developer Studio - Manual (Page 72)

7.3 DFIN_IO_DigitalFrequency (node number 21)
Drive PLC
System blocks − Extension Board 3
7−4
L
DrivePLC DE 6.0
7.3 DFIN_IO_DigitalFrequency (node number 21)
7.3.1 Inputs_DFIN (encoder input of extension board 3)
This SB can convert and normalise a pulse current at the encoder input X3 of the extension board
3 into a speed value.
·
The transmission is very precise without offset and gain errors.
·
In addition, this SB provides the angle correction value DFIN_dnIncLastScan_p which is
required within the calling task for the angle processing in touch probe processes.
( ^ 7−8)
DFIN_IO_DigitalFrequency
C0426
X3
C0425
1
0
TP/MP
-Ctrl
C0428 C0429
DFIN_nIn_v
DFIN_bTPReceived_b
DFIN_dnIncLastScan_p
MP
I1
C0431
0
1
Fig. 7−3 DFIN_IO_DigitalFrequency
System variables
Variable Data type Signal type Address Display
Code
Display
Format
Notes
DFIN_nIn_v Integer velocity %IW21.0 C0426 dec [rpm]
DFIN_bTPReceived_b Bool binary %IX21.4.0 − −
DFIN_dnIncLastScan_p Double integer position %ID21.1 − −
Tip!
The process image is newly created for every task the SB is used in.
·
If DFIN_nIn_v, DFIN_dnIncLastScan_p and DFIN_bTPReceived_b are used in several tasks,
every task gets its own SB process image.
·
This process is different from the previous process image principle!