KEYENCE Visual KV Series - Manual (Page 151)

2.4 Instruction Details
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3-127 Chapter 2 Instructions
Indirect addressing
■ Indirect addressing
Indirect addressing is used to so you don't have to use fixed data memories or relay
Nos. when the contents of data memory or a relay is stored in internal registers, or
when the contents of the internal memory is stored in data memory or a relay.
■ Method for indirect addressing
•
Specify the operand for instructions as "#TMxx". The contents of "TMxx" is
considered to be the specification No. (indirect addressing).
Example
When TM02 value is "0000", "#TM02" represents DM0000.
When TM02 value is "10000", "#TM02" represents 0000 (relay).
• Any of "02" through "29" can be specified for "xx".
• Specify the desired decimal number for "xx".
• Numbers "0000" through "1999" specify DM0000 through DM1999 (data
memory).
Numbers "10000" through "27915" specify 0000 through 17915 (relay).
Example: LDA #TM15
This is the same operation whether "LDA DM0020" or "LDA 1000" is specified. The
specified data memory or relay can be changed as desired by changing the value of
TM15.
Example: STA #TM02
This is the same operation whether "STA DM0000" or "STA 3000" is specified. The
specified data memory or relay can be changed as desired by changing the value of
TM02.
■ Range of DM and relay Nos. that can be specified by "TMxx"
■ Instructions which can use indirect addressing:
Specify "#TMxx" as an operand relay.
LDA, @LDA, STA, @STA, CMP, @CMP, ADD, @ADD, SUB, @SUB, MUL, @MUL,
DIV, @DIV, ANDA, @ANDA, ORA, @ORA, EORA, @EORA
Note 1: "2000" to "9999" cannot be used as a TMxx value.
Note 2: If there is no data memory or relay corresponding to the number specified
with "#TMxx", special utility relay 2012 turns ON.
TM15 value Data entered into internal register
20 DM0020
11000 1000 to 1015
TM02 value Specified destination
00 DM0000
13000 3000 to 3015
TMxx value DM/relay
0000 to 1999 DM0000 to DM1999
2000 to 9999 Cannot be used.
10000 to 27915 0000 to 17915
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KVNKA Chap 02_4bP.p65 08.3.11, 0:00 PM 127