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1.7 PL260 memory areas
The PL260 module provides the user with memory areas where it is
possible to read or write program data. Memory areas can be entered by
instruction with access by single bit (B), by word (W) or double word (D).
Variables V area B, W, D
Special Marker area B, W, D
Digital inputs area B, W
Analogue inputs area B, W
Digital outputs area B, W
Marker area B, W
Analogue outputs area B, W
Timer area B, W
Preset Timer area B, W
Counters area B, W
Preset counters area B, W
EEPROM area W
EEPROM_MEMORY area W
COM1_TX area W
COM1_RX area W
EXP1_TX area W
EXP1_RX area W
COM2_TX area W
COM2_RX area W
1.7.1 Variables V memory area
The memory area “Variables V” is the memory which is used by the
program to store data of operations. It is composed by 350 locations, type
word (16 bit) or 175 double words (32 bit). This area may be edited by
operations on bit, word or double word. The number of double word still
refers to the words structure, therefore a single double word uses 2 single
word addresses (eg. VD0=VW0+VW1)
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