Mitsubishi Electric RD77GF8 User Manual page 142

RWw offset/size information
■RWw offset/size information (Un\G119968 to Un\G120209)
The start No. and the number of points of RWw for each station are stored.
Address
Un\G119968
Un\G119969
Un\G119970
Un\G119971

Un\G120206
Un\G120207
Un\G120208
Un\G120209
The offset and size of buffer memory areas for each station No. (other than a station No.0) can be calculated using the
following formulas:
• Offset buffer memory address = 119968 + (station No. - 1)  2
• Size buffer memory address = 119969 + (station No. - 1)  2
RWr offset/size information
■RWr offset/size information (Un\G120224 to Un\G120465)
The start No. and the number of points of RWr for each station are stored.
Address
Un\G120224
Un\G120225
Un\G120226
Un\G120227

Un\G120462
Un\G120463
Un\G120464
Un\G120465
The offset and size of buffer memory areas for each station No. (other than a station No.0) can be calculated using the
following formulas:
• Offset buffer memory address = 120224 + (station No. - 1)  2
• Size buffer memory address = 120225 + (station No. - 1)  2
APPX
140
Appendix 2 Buffer Memory
Description
Station No.1 offset
Station No.1 size (in units of words)
Station No.2 offset
Station No.2 size (in units of words)
Station No.120 offset
Station No.120 size (in units of words)
Station No.0 offset
Station No.0 size (in units of words)
Description
Station No.1 offset
Station No.1 size (in units of words)
Station No.2 offset
Station No.2 size (in units of words)
Station No.120 offset
Station No.120 size (in units of words)
Station No.0 offset
Station No.0 size (in units of words)