Hitachi S10Mini SV.Link, Hardware Manual, Page: 44 / 75

4 USER GUIDE
- 34 -
(4) Remote station (MELSEC) transmission/reception start address setup areas
The areas for setting the transmission/reception start address of the remote station (MELSEC)
are indicated below. Up to four areas can be specified for each of write and read. The
contents of these areas are merely used for the area check that is performed at the beginning of
communications (for checking whether the S10mini and MELSEC agree in bit/word area).
Therefore, the data will not be written to the areas specified as explained here and the data will
not be read from the areas specified as explained here. The areas used for transmissions from
the MELSEC and the areas used for the storage of data received by the MELSEC both depend
on the design of the MELSEC application program.
Register
number
Area name Setting range Remarks
BD020 Cyclic write area 1 *1
BD021 Cyclic write area 2 *1
BD022 Cyclic write area 3 *1
BD023 Cyclic write area 4 *1
BD024 Cyclic read area 1 *1
BD025 Cyclic read area 2 *1
BD026 Cyclic read area 3 *1
BD027 Cyclic read area 4
Bit registers: X, Y, M, B, and F
registers
Word registers: D, W, and R registers
*1
BD028 Reserved for future use To be fixed at 0.
BD029 Reserved for future use To be fixed at 0.
BD02A Reserved for future use To be fixed at 0.
BD02B Reserved for future use To be fixed at 0.
BD02C Reserved for future use To be fixed at 0.
BD02D Reserved for future use To be fixed at 0.
BD02E Reserved for future use To be fixed at 0.
BD02F Reserved for future use To be fixed at 0.
*1 The simultaneous use of bit and word registers is an allowable practice. For the procedure for
specifying the write/read areas, see item (7).
NOTE
Although the parameters are checked at startup, they are not checked for a
duplicate of the areas 1 through 4 and write/read areas. The user should
exercise area management so as to avoid area duplication.
The above area setting and the setting indicated under "Local station
transmission/reception start address setup areas" must agree in bit/word type.
If they do not agree, a parameter setting error occurs and SV.LINK stops its
communications.