OPC90 Server
UINT
rate in milliseconds for all STN blocks belongin
this device. When a STN.K* attribute is written
STN.KFAST (see STN block description) is se
server automatically polls for STN.PV a
g to
or
t the
nd STN.CO
values for the interval and rate defined by this
ing
ro
setting. This feature is very useful for loop tun
software. Setting the fast update interval to ze
will disable it.
Set .KFAST on K* t
writes
*,
ag
Boolean
Config
When set, any write to the PID tuning tags (.K
OUT_HI_LIM AND OUT_LO_LIM) will
automatically turn .KFAST on.
NON-KEYED STN
UPDATE
ed by
tion
eyed
e
Try
rate
messaging.
FAST
Boolean
Config
When STN block fast update is in effect, the
process variable and control output are receiv
polling instead of exception reporting. This op
causes the poll messages to be sent as non-k
messages. It should only be enabled when th
communication scheme is redundant channel.
enabling this option if the STN fast update poll
is not being achieved using normally keyed
Represent STN
Mode As 0 - 5
Boolean
Config
Normally the STN block represents mode in the
range of 0 – 2 where 0 = manual, 1 = auto and 2 =
cascade / ratio. This representation is the same
regardless of the current station operating level
(local or computer). The station level is monitored
and controlled using the STN_LEVEL tag. Setting
this option changes the STN mode representation
to be in the range 0 – 5 where 0 = local manual, 1
= local auto, 2 = local cascade / ratio, 3 = computer
manual, 4 = computer auto and 5 = computer
cascade / ratio. This option allows clients to
control STN mode and level via the STN.MODE
tag.
AUTOMATIC SEND STN
CPU_OK
Boolean Config
Instructs
OPC90
send CPU_OK messages to
any STN block that is in computer level control.
The frequency of these messages will be ¾ of the
to
current STN block computer watchdog time setting.
NO
Bailey
note
2). For each possible node number, one of the
nt, 1.4K
ap must
tion to
tems.
system
DE01 to NODE63
Array of
Config
Defines the node map required for ABB
8 Bit
Network 90 systems when the time
UINTs
synchronization option has been enabled (see
following choices must be selected; Vaca
Tag OIU, PCU, CIU01, Other. The node m
be accurately defined for time synchroniza
function correctly on Network 90 based sys
These attributes are ignored when time
synchronization is disabled or an Infi 90
has been specified or detected.
SIMULA
electing
on of
ht
g properties
The selections
are sine, ramp, random and constant. Selecting
the “AOL and DOL block input” simulation option
TION
Boolean
Config
Two types of simulation can be selected. S
“Device and input blocks”, simulates
communication with the interface and recepti
values. The type of value simulation is
configurable for each block attribute by rig
clicking on the attribute and selectin
and than the simulation signal type.
The RoviSys Company
Version 7.0
Page 64