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IM 04L51B01-20EN
OPC-UA Communication Data
Handling of Communication Data
As described in “GX/GP/GM Data Structure” earlier, the GX/GP/GM OPC-UA communication
function allows handling of not only the data values and alarms of I/O channels, math
channels, and communication channels but also the status of the data values and alarms.
The items that can be acquired when data is acquired using normal OPC-UA communication
are as follows.
1. Node name
2. Data value
3. Data status
4. Time information
The node name and time information are determined by the server, but data values and
status vary depending on the GX/GP/GM channel data and channel status.
The data values and status that can be acquired depending on the channel status are
shown below.
GX/GP/GM Channel Status
OPC-UA data (float)
OPC-UA status
Skip
0 (0x00000000)
Good
+Over
+∞ (0x7f800000)
Good
–Over
–∞ (0xff800000)
Good
+Burnout
+∞ (0x7f800000)
Good
–Burnout
–∞ (0xff800000)
Good
A/D error
Data value (physical value)
BadDataUnavailable
Invalid
Data value (physical value)
BadDataUnavailable
Math NaN
Data value (physical value)
BadDataUnavailable
Communication error
Data value (physical value)
BadDataUnavailable
RJC error
Data value (physical value)
BadDataUnavailable
A/D configuration error
Data value (physical value)
BadDataUnavailable
No error
Data value (physical value)
Good
Summary of Contents for SMARTDAG+ GX10
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