Yokogawa DR240 - Manual (Page 249)

14-4 IM DR232-01E
Data Save/Load Function
Media for data save/load
Buffer memory (internal SRAM)
Capacity: 512 KB
Data backup: Around 10 years (backup with lithium battery, at room temperature while power is
off)
Specified data length: 10, 20, 30, 40, 50, 100, 200, 300, 400, 500, 1k, 2k, 3k, 4k, 5k, 10k, 20k,
30k, 40k, and 50k data/ch (Total memory lengt must be within the free memory size.)
3.5-inch floppy disk
Number of drives: 1
Disk types: 2HD, 2DD
Supported formats: 1.2 MB, 1.44 MB, and 720 KB
Applicable data
Setting values, measured values, and computed values (only possible whe optional math function
is specified)
Method to save to the floppy disk
Copies data stored in the buffer memory to the floppy disk, except for setting values which can
be directly saved to the floppy disk.
Method to load from floppy disk
Copies data from the floppy disk to the buffer memory except for settin values which can be
directly loaded from the floppy disk.
Printing and outputing loaded data
Able to print captured data saved in the buffer memory or output to a communication interface.
Data save format
Setting values: ASCII
Measured/computed values: binary (except ASCII (CSV Format) is also possible when saving to
floppy disk.)
Data capacity
Setting values
Maximum about 250 kB (in case when saving the setting values of an operation mode with 300ch
inputs and 60ch computations.)
Measured values
Binary data: 2 bytes / 1 data
ASCII data: 12bytes / 1 data
Computed values
Binary data: 4 bytes / 1 data
ASCII data: 12 bytes / 1 data
Equation to calculate the total data capacity
576 + 64
× (number of measured ch + number of computation ch) + (number of measured ch ×
2 + number of computation ch
Ч 4 + 6) Ч specified data length
Save interval of measured/computed values
Measurement interval of the recorder, or select from 1 min/2 min/5 min/10 min (By combining
with the event/action function, it can also sample 1 data at a time e.g. at each M.FUNC key or
remote control signal input.)
Selection of the saving method of measured/computed values (WRITE MODE)
Direct: Start saving the data when key operation occurs. After saving specified length of data,
stop the saving process.
Trigger single: Start saving the data when the trigger condition is met.
After saving a specified length of data, stop the saving process.
Trigger repeat: Start saving the data when the trigger condition is met. Repeat the process of
saving a specified length of data to 1 file, until there is no more area in the memory.
Trigger condition
All Trigger conditions are configured with the event/action function.
Trigger condition when saving the measured/computed values: Event/actio function (such as key
operation, remote control signal, alarm status, and chartend)
Trigger condition when loading the measured/computed values (from buffe memory): Event/
action function (such as key operation, remote control signal, and alarm status)
Pretrigger: 0 to 100% (can be specified in 10% intervals)
14.1 Specifications of DR232/DR242 and DS400/DS600