Hitachi SV.LINK User Manual page 74

(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 set 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 or S10V and MELSEC
agree in bit/word register). 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
BD020 Cyclic write area 1
BD021 Cyclic write area 2
BD022 Cyclic write area 3
BD023 Cyclic write area 4
BD024 Cyclic read area 1
BD025 Cyclic read area 2
BD026 Cyclic read area 3
BD027 Cyclic read area 4
BD028 Reserved for future use
BD029 Reserved for future use
BD02A Reserved for future use
BD02B Reserved for future use
BD02C Reserved for future use
BD02D Reserved for future use
BD02E Reserved for future use
BD02F Reserved for future use
(*) The simultaneous use of bit and word registers is an allowable practice. For the
procedure for setting the write/read areas, see item (7).
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.
Local station and remote station (MELSEC) transmission/reception start
address setup areas must agree in bit/word register. If they do not agree, a
parameter setting error occurs and SV.LINK stops its communications.
Area name
NOTICE
5-9
Setting range
Bit registers: X, Y, M, B, and F
registers
Word registers: D, W, and R registers
(*)
To be fixed at 0.
To be fixed at 0.
To be fixed at 0.
To be fixed at 0.
To be fixed at 0.
To be fixed at 0.
To be fixed at 0.
To be fixed at 0.
5 PROGRAMMING