Siemens S7-400PLC Spezifikationen Seite 72

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Differences between FB10 / FB20
72 01.00|FB20|en
FB10/20 switching: input + in/output
FB10 FB20 Remark
sity of creating a signal change over
several PLC cycles. Here, the control
function is executed only as long as the
"bii_1_mot_fkt_start" or the
"bii_1_mot_fkt_asf" signals are 1/True.
bii_1_mot_fkt_start_pf This signal has the same functionalities
as the "bii_1_mot_fkt_start" signal,
with the only difference that it does not
have to remain present. This is to simu-
late the same/a similar functionality as
"I_CMD_START_POS" with the old FB.
bii_1_mot_strom_nenn This signal has been added so that a
simple switch to the nominal current of
the module can be done, which is use-
ful for the touch feature, for instance.
--- bii_do_01_anst The outputs of the drive are controlled
at intervals according to the signal sta-
tus in the FB.
bii_do_02_anst
bii_do_03_anst
bii_do_04_anst
I_POS_MODE by_fkt_mod
Specification of the regulation functions
of xB0..C1.
As a new special function, the com-
mand xff has been added to control the
drive only by the target value V/I.
--- bii_1_vfs_prio The execution of the positioning block
has priority. Only the stop and emer-
gency stop functions are still functional.
I_POS_SEQUENCE ii_vfs_nr Positioning block number specification
Positioning blocks with ACK, referenc-
ing or similar functions cannot be ex-
ecuted if they are in contradiction to
the functionality of the FB20.
I_POS_VELOCITY rei_sw_v_tip For the manual or automatic operating
modes in the systems, two speed speci-
fications were now made in the new
FB, which simplify the work of an PLC
programmer.
rei_sw_v_reg
I_POS_ACCELERATION rei_sw_vr Accelerating value
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