Omron ETHERNET DIRECT DR 170 14 - Manual (Page 50)

Klinkmann Automation Omron Ethernet DAServer 48
Omron Ethernet DAServer Ver 1.x User Manual Rev 1.4 17014m14
DAServer Global System Item
The following system item refers to specific information regarding a global condition of the
DAServer.
System Item
Name
Type/
Access
Rights
Description Values
$SYS$Licensed Boolean/
Read
Binary status indication of the
existence of a valid license for the
DAServer.
If FALSE, this item causes the
DAServer to stop updating existing
tags, to refuse activation of new tags,
and to reject write requests in addition
to setting quality for all items to BAD.
If TRUE, the DAServer functions as
configured.
All instances have the same value. RANGE: 0, 1
1: Valid license
exists.
0: No valid
license exists.
Note: With Omron Ethernet DAServer Global System Item $SYS$Licensed is not
relevant.
DAServer Device-Specific System Items
The following system items refer to specific information regarding the device(s) the
DAServer is connected to.
System Item
Name
Type/
Access
Rights
Description Values
$SYS$Status Boolean/
Read
Binary status indication of the
connection state to the device
(hierarchy level) the item is
attached to.
The device group (OPC access
path/topic) does not affect the
value. The status can be good
even if individual items have
errors.
For DDE/SuiteLink clients,
$SYS$Status always comes
from the leaf level of a DAServer
hierarchy branch, which is the
destination PLC node.
For OPC clients, $SYS$Status
can be accessed at all hierarchy
levels. $SYS$Status at the root
level of the whole hierarchy tree
is always good, as it represents
the quality status of the local
computer itself. Hence, for RANGE: 0, 1
1: DAServer
connection to the
device is intact.
0: Error
communicating
with the device.