Diagnostics Optimization CT MODBUS RTU Technical Data
432
E300 Design Guide
Issue Number: 1
The scope function can capture up to 4000 bytes of parameter data. The
Data Logger Time Period
(
Y16
) gives the length of the time period covered
by the scope buffer in milliseconds which depends on the number of traces stored, the sample time and the size of the parameters used as trace
sources.
Sample time in milliseconds = (250 x 10
-6
x
Data Logger Sample Time
(
Y14
)) x 1000
Size of trace data is the sum of the number of bytes in each of the trace sources selected by
Data Logger Trace 1 Source
(
Y02
) to
Data Logger Trace
4 Source
(
Y05
).
Data Logger Time Period
(
Y16
) (ms) = 4000 x Sample time in milliseconds / Size of trace data
Auto-save mode can be used to store a scope file on a non-volatile media card at each trigger event. The auto-save system is held in reset if
Data
Logger Autosave Reset
(
Y19
) = 1. When the auto-save system is reset all the scope files in scope file folder on the NV media card are deleted,
Data
Logger Autosave File Number
(
Y18
) is reset to 0 and the auto-save system is inactive. If any of the file operations fail during reset
Data Logger
Autosave Status
(
Y20
) is 3 (Failed) when the reset is removed.
The following conditions must be met for auto-saving to be active:
1.
Autosave Mode
(
Y17
) is non-zero
2. Data Logger
Autosave Reset
(
Y19
) = 0
3. Data Logger
Autosave Status
(
Y20
) = 1 (Active)
4.
Data Logging Mode
(
Y10
) = 0 (Single) or 1 (Normal)
If auto-saving is active an attempt is made to copy the scope file to a non-volatile media card installed to the drive each time the post-trigger data has
been acquired. The file name is SCY00XY.DAT, where XY is defined by
Data Logger Autosave File Number
(
Y18
). If
Autosave Mode
(
Y17
) = 1
(Overwrite) then a file is over-written if it already exists. If
Autosave Mode
(
Y17
) = 2 (Keep) then if the file already exists the auto-save process is
aborted.
Data Logger Autosave File Number
(
Y18
) is incremented after a file is saved successfully and rolls over to 0 if it exceeds its maximum value.
If
Data Logger Autosave Status
(
Y20
) = 0 (Disabled) and all the other conditions listed above for auto-saving to be active are met, then
Data Logger
Autosave Status
(
Y20
) changes to 1 (Active), so that auto-saving becomes active. If the scope file cannot be saved because the file exists and
Autosave Mode
(
Y17
) = 2 (Keep) then
Data Logger Autosave Status
(
Y20
) is set to 2 (Stopped). If the scope file cannot be saved for any other reason
then
Data Logger Autosave Status
(
Y20
) is set to 3 (Failed). If
Data Logger Autosave Status
(
Y20
) is no longer 1 (Active), auto-saving is aborted.
Auto-saving can be made active again by setting
Data Logger Autosave Reset
(
Y19
) to 1 and then to 0. If
Autosave Mode
(
Y17
) = 0 (Disabled) then
Data Logger Autosave Status
(
Y20
) is set to 0 (Disabled), or if
Autosave Mode
(
Y17
) is non-zero then
Data Logger Autosave Status
(
Y20
) is set to 1
(Active). It should be noted that
Data Logger Autosave Status
(
Y20
) is a power-down save parameter, and so auto-save will remain inactive if
Data
Logger Autosave Status
(
Y20
) is 2 or 3 even if the drive is powered down and then powered up again.
See
Autosave Mode
(
Y17
).
Y16
Data Logger Time Period
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0.00
Maximum
200000.00
Default
0
Units
ms
Type
32 Bit Volatile
Update Rate
Background write
Display Format
Standard
Decimal Places
2
Coding
RO, ND, NC, PT
Y17
Autosave Mode
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
2
Default
0
Units
Type
8 Bit User Save
Update Rate
Background read
Display Format
Standard
Decimal Places
0
Coding
RW, Txt
Value
Text
0
Disabled
1
Overwrite
2
Keep
Y18
Data Logger Autosave File Number
Mode
Open-Loop, RFC-A, RFC-S
Minimum
0
Maximum
99
Default
0
Units
Type
8 Bit Power Down Save
Update Rate
Background read/write
Display Format
Standard
Decimal Places
0
Coding
RO
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