Registers of programmable controller used to store the analog control, position control, data I/O required for data and parameters. Every data register is 16-bit (MSB as the sign bit), you can use two data consolidation for 32-bit data registers (the highest bit is the sign bit).
(1) with data registers D0 ∽ D199 (200 points)
If no other data are written, it is write the data does not change. However, the PLC status by running (RUN) → stop (STOP) when all of the data is cleared.
Note:
Special auxiliary relays M8033 set to 1, while the PLC from RUN to STOP, the data can be maintained.
(2) power outage data register D200 ∽ D511 (312 points)
Unless rewritten, otherwise the data will not be lost. Deny power or not, PLC running or not, its contents will not be changed. Two PLC for point-to-point communication, D490 ∽ D509 is used as a communication operation.
(3) a special data register D8000 ∽ D8255 (256 points)
These data register for monitoring various components PLC operation purposes and its contents in the power is switched on (ON), writes an initialization value (all cleared, and arranged by the system ROM write the initial value).
(4) is file register D1000 ∽ D2999 (2000)
Used to store large amounts of data, such as data collection, statistical calculations, multiple set of control parameters and so on. Their number determined by the CPU monitoring software, but can be expanded by the method of expansion memory card. It takes up a store inside the user program memory, with 500 points as a unit, up to 2000 can be set when the parameter is set, use the programmer to write.
PLC operation, using BMOV instruction data file registers can be read in general-purpose data registers, but cannot use command writes data to the file register.
PLC ONE 