Programming the MOBY-ASM on PROFIBUS
B.3 Methods of operation with the ASM
FC 45
B-12
Function manual, Release 03/2006 , J31069-D0167-U001-A2-7618
Command repetition can also be concretely controlled as shown below.
•
An external proximity switch is used to signal that a new MDS is entering the transmission
window (see figure below: Ⓐ).
•
A new MDS is detected with the ANZ_MDS_present_ bit, and command repetition is then
started (see figure below: Ⓑ).
In this case, the command_repeat_active_ bit must be scanned to make sure the command
repetition was accepted.
7LPHD[LV
$60LVSURJUDPPHG
RQFHDVGHVFULEHG
HDUOLHULQWKLVVHFWLRQ
7KHFRPPDQGLVH[HFXWHG
WKHDFNQRZOHGJHPHQW
FRXQWHULVLQFUHPHQWHGDQG
WKHUHVXOWLVWUDQVIHUUHG
7ULJJHUVLJQDOIRU
DFRPPDQGVWDUW
$1=B0'6BSUHVHQWBൺ
8VHUVWDUWVZLWK
UHSHDWBFRPPDQGB
+DQGVKDNH
VHTXHQFHWRPDNH
VXUHFRPPDQGLV
SURFHVVHG
$SSOLFDWLRQZDLWV
KHUHIRUQH[W0'6
3URFHVVLQJVHTXHQFH
IRUDQRWKHU0'6
&RPPXQLFDWLRQGLUHFWLRQ
7KHFRPPDQGDQGDFNQRZOHGJHPHQWWHOHJUDPLVDQDF\FOLF'39WHOHJUDPZLWK'39UHVSRQVH
$VWDUWLVRQO\DOORZHGDIWHUFKDQJLQJWKHFRPPDQGDQGRUDFNQRZOHGJHPHQWFRXQWHU
&KDQJHFRPPDQGFRXQWHU,IWKHFRPPDQGLVUHSHDWHGWKHFRPPDQGFRXQWHUDOZD\V
UHWDLQVWKHVDPHFRXQWHUYDOXH
&KDQJHDFNQRZOHGJHPHQWFRXQWHU1HZVWDWXV ROGVWDWXVF\FOLFZRUG
1RFKDQJHWRF\FOLFGDWD
7KHFRPPDQGLVH[HFXWHG
WKHDFNQRZOHGJHPHQW
FRXQWHULVLQFUHPHQWHGDQG
WKHUHVXOWLVWUDQVIHUUHG
$
%
'3PDVWHU
02%<$60
UHSHDWBFRPPDQGB
$60BEXV\B
$1=B0'6BSUHVHQWB
FRPPDQGBUHSHDWBDFWLYHB
Figure B-9
Focused command repetition