4.3 Conversion of Special Data Registers
4.3 Conversion of Special Data Registers
When using special data registers on a conventional model, address conversion is performed
in accordance with the conversion rule for converting programs to FP7 programs.
Conversion rule
(1) Only for convertible special data registers, address conversion is performed.
(2) As only similar device items are converted, the device addresses after DT90030 (DT9030)
cannot be converted.
(3) The addresses of special data registers vary according to conventional models.
From DT90000: FPX / FP-X0 / FP SIGMA / FP0R / FP2 / FP2SH / FP10 / FP10SH
From DT9000: FP-e / FP0 / FP1 / FP-M / FP3 / FP5
Operation when an instruction cannot be converted
Converts instructions leaving inconvertible device numbers unchanged, and sets "network to
be excluded from execution".
Example) Before converting an FP2SH program
Example) After converting the program to FP7 program
In the above example, the device address DT90018 is the output result of inconvertible item.
List of convertible special data registers
Convertible special data registers are as follows.
All other special data registers cannot be converted.
Self-diagnosis error code
Self-diagnostic error code
Operation auxiliary register
(Division, remainder)
Operation auxiliary register
(Division, remainder)
Operation auxiliary register
(Division, remainder)
Operation auxiliary register
(Division, remainder)
Not used
* Convertible as this is used for
other models except FP2SH.