Omron ETHERNET DIRECT DR 170 14 - Manual (Page 53)

Klinkmann Automation Omron Ethernet DAServer 51
Omron Ethernet DAServer Ver 1.x User Manual Rev 1.4 17014m14
or a -1 to test a client reaction
on write errors).
If the value of this item is zero,
it cannot be poked.
$SYS$ReadComplete
Integer/
ReadWrite
Used to access the state of
initial reads on all items in the
corresponding device group.
The value is 1 if all active
items in a device group have
been read at least once. If at
least one item in the device
group is activated, this item
changes to 0. It changes to 1
if all items have been read
successfully, or to -1 if at least
one item has a non-good
quality. Poking a 0 to this item
resets the internal read states
of all items in this device
group. This resets this item to
0. If all items are read again
after this poke, this item
changes back to 1 or -1. RANGE: -1, 0, 1
1: Read
complete (all
values have
been read).
0: Not all values
have been read.
-1: All values
have been read
but some have a
non-good quality.
$SYS$ItemCount DWord/
Read Used to access the number of
items in the corresponding
device group. This item is
read-only. RANGE:
0…2147483647
>=0: Number of
active items.
$SYS$ActiveItemCoun
t DWord/
Read
Used to access the number of
active items in the
corresponding device group.
This item is read-only. RANGE:
0…2147483647
>=0: Number of
active items.
$SYS$ErrorCount DWord/
Read Used to access the number of
all items (active and inactive)
that have errors (non-good
OPC quality) in the
corresponding topic. If the
communications status of a
device group is bad, all items
have errors. This item is read-
only. RANGE:
0…2147483647
>=0: Number of
all items (active
and inactive) with
errors.
$SYS$PollNow Boolean/
ReadWrite Poking a 1 to this item forces
all items in the corresponding
device group to be read
immediately (all messages in
this device group become
due). This is useful if you want
to force to get the newest
values from the device,
regardless of its update
interval. This also works on RANGE: 0, 1