OPC90 Server
7.6
Data Block (DATA)
The purpose of the OPC90 DATA block is to
information with each other through values
supported by this block. The DATA block
VT_I4, VT_UI1, VT_UI2, VT_UI4, VT_R4, VT_R8 and VT_BSTR tag values. It
s a gene
pose
solu
state timer function. The high resolution ti
minutes, hours or days. It can also be
automatically restarts or must be manually restarted. The Boolean swap state
alue b
tru
alse
of these timer functions are controllable
Whenever the database is saved, the cu
included in the saved data and will be restor
OPC90 block counts aga
not consume any space or bandwidth within
TAGNAME TYPE ACCESS
D
enable OPC clients to communicate
they read / write to the various tags
supports VT_BOOL, VT_I1, VT_I2,
also include
ral pur
high re
tion timer function and Boolean swap
mer units can be setup for seconds,
setup as an up or down timer that
timer flops its v
etween
e and f
at the specified period (seconds). All
from client accessible OPC tags.
rrent OPC client timer settings are
ed when OPC90 is restarted.
Restrictions: This
inst the total block license but does
the Bailey interface.
ESCRIPTION
BOOL VT_BOOL
Read/Write
B
t
oolean, VT_BOOL (0 = false, not zero =
rue).
BSTR VT_BSTR
Read/Write
String, VT_BSTR.
I1 VT_I1
Read/Write
Signed I1, VT_I1 (-128 to 127).
I2 VT_I2
Read/Write
Signed I2, VT_I2 (-32,768 to 32,767).
I4 VT_I
ea
S
2
4
R
d/Write
igned I4, VT_I4 (-2,147,483,648 to
,147,483,647).
UI1 VT_UI1
Read/Write
Unsigned I1, VT_UI1 (0 to 255).
UI2 VT_UI2
Read/Write
Unsigned I2, VT_UI2 (0 to 65,535).
UI4 VT_UI4
Read/Write
Unsigned I4, VT_UI4 (0 to 4,294,967,295).
R4 VT_R4
Read/Write
Real 4, VT_R4.
R8 VT_R8
Read/Write
Real 8, VT_R8.
MESSAGE
VT_BSTR
Read
Provides the block operational message.
TAG
VT_BSTR
Read
Provides the block name.
TAGLONG VT_B
P
STR
Read
rovides
the block long OPC path name.
TAGDESC
VT_BSTR
Read
Provides the block descriptor.
TIMER
VT_R8
Read/Write
R
T
unning timer (in units setup by
IMER_CTRL).
TIMER_CTRL VT_UI1 Read/Write T
d
imer
control (+0 secs, +1 mins, +2 hours, +3
ays, +4 auto reset, +8 down timer).
TIMER_ALARM VT_BOOL Read
T
indicator (true = timed out).
imer
alarm
TIMER_LIMIT VT_R
T
8 Read/Write imer
limit.
SWAP
VT_BOOL
Read/Write
Swaps state between true / false.
SWAP_TIME VT_R8 Read/Write
Time
between each state swap (seconds).
The RoviSys Company
Version 7.0
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