Addressing example Description
CU C [LW 10] Start counter; counter no. is in local data word
10
Memory-indirect, area-internal addressing
A I [LD 12]e.g.: LP#22.2 T LD 12 A I
[LD 12]
AND instruction; input address is in local data
double word 12 as pointer
A I [DBD 1] AND instruction; input address is in data double
word 1 of the DB as pointer
A Q [DID 12] AND instruction; output address is in data
double word 12 of the instance DB as pointer
A Q [MD 12] AND instruction; output address is in bit
memory double word 12 as pointer
Register-indirect, area-internal addressing
A I [AR1,P#12.2] AND instruction; input address is calculated
"pointer value in address register 1 + pointer
P#12.2"
Register-indirect, area-crossing addressing
For the area-crossing, register indirect addressing the address needs an additional
range-ID in the bits 24-26. The address is in the address register.
Range-ID Binary code hex. Area
P 1000 0000 80 Periphery area
I 1000 0001 81 Input area
Q 1000 0010 82 Output area
M 1000 0011 83 Bit memory area
DB 1000 0100 84 Data area
DI 1000 0101 85 Instance data area
L 1000 0110 86 Local data area
VL 1000 0111 87 Preceding local data
area
(access to the local data
of the calling block)
L B [AR1,P#8.0] Load byte in ACCU1; the address is calculated
"pointer value in address register 1 + pointer
P#8.0"
A [AR1,P#32.3] AND instruction; operand address is calculated
"pointer value in address register 1 + pointer
P#32.3"
Addressing via parameters
A parameter The operand is addressed via the parameter
VIPA SPEED7
IL operations
Addressing examples
HB00 | OPL_SP7 | Operation list | en | 18-30 29
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