Emerson E300 Series Design Manual page 432

Safety Product Mechanical
information information installation
Y16 Data Logger Time Period
Mode Open-Loop, RFC-A, RFC-S
Minimum 0.00
Default 0
Type 32 Bit Volatile
Display Format Standard
Coding RO, ND, NC, PT
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
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
Y17 Autosave Mode
Mode Open-Loop, RFC-A, RFC-S
Minimum 0
Default 0
Type 8 Bit User Save
Display Format Standard
Coding RW, Txt
Value
0 Disabled
1 Overwrite
2 Keep
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.
Y18 Data Logger Autosave File Number
Mode Open-Loop, RFC-A, RFC-S
Minimum 0
Default 0
Type 8 Bit Power Down Save
Display Format Standard
Coding RO
See Autosave Mode (Y17).
432
Electrical Getting
User Menu A Commissioning
installation started
-6
x Data Logger Sample Time (Y14)) x 1000
Text
Advanced
Diagnostics Optimization CT MODBUS RTU Technical Data
Parameters
Maximum 200000.00
Units ms
Update Rate Background write
Decimal Places 2
Maximum 2
Units
Update Rate Background read
Decimal Places 0
Maximum 99
Units
Update Rate Background read/write
Decimal Places 0
E300 Design Guide
Issue Number: 1