HMS AnyBus DataTransfer Design Manual page 19

No
No
APP IND = 02
APP IND = 01
Figure 5. Initialisation
START
AB_IND = 00
(3FFh)
APP_IND = 02
(3FEh)
WAIT 0.1 ms
AB_IND
=
F2
Yes
SETUP
OUTPUT MODE
(3FD) AND
IO-AREA
(3F8-3FBh)
APP_IND = 01
WAIT 0.1 ms
AB_IND
=
01
YES
STATUS
No
BIT0 =1
(3FDh)
Yes
APP_IND = 0F
WAIT 0.1 ms
No
INIT
COMPLETE
HMS F
write 00h to
skip if using the
module the
error encountered
wait until DT
could have
respond
AB_IND
=
00
Yes
S AB
IELDBUS YSTEMS
Design Guide
Start the
initialisation
register
for safe start
request control
over DPRAM
request OK?
configure the
data area in
DT module;
default values
request release
the DPRAM
wait 0.1 m sec.
during this time
checks thet DT-
the status bit
(in 3FDh) is set
respectively
release OK?
if status=1
initialised
successful
write:
to APP_IND
restart
initialisation
with changed
parameters
initialisation
completed
Successfully
Fieldbus
Running
Revision 1.12
1998-08-12
Page 19 (35)