Table Instructions; Add To Table - Siemens SIMATIC S7-200 System Manual

Table Instructions

Add To Table

The Add To Table instruction adds word values (DATA) to a
table (TBL). The first value of the table is the maximum table
length (TL). The second value is the entry count (EC), which
specifies the number of entries in the table. New data are
added to the table after the last entry. Each time new data
are added to the table, the entry count is incremented.
A table can have up to 100 data entries.
Error conditions that set ENO = 0
H SM1.4 (table overflow)
H 0006 (indirect address)
H 0091 (operand out of range)
SM bits affected:
H SM1.4 is set to 1 if you try to overfill the table
Table 6-68 Valid Operands for the Table Instructions
Inputs/Outputs
DATA
TBL
Example: Add to Table Instruction
Data Types Operands
INT IW, QW, VW, MW, SMW, SW, T, C, LW, AC, AIW, *VD, *LD, *AC, Constant
WORD IW, QW, VW, MW, SMW, SW, T, C, LW, *VD, *LD, *AC
Before execution of ATT
VW100 1234
VW200 0006 TL (max. no. of entries)
VW202 0002 EC (entry count)
VW204 5431 d0 (data 0)
VW206 8942 d1 (data 1)
VW208 xxxx
VW210 xxxx
VW212 xxxx
VW214 xxxx
S7-200 Instruction Set
Network 1 //Load maximum table length
LD SM0.1
MOVW +6, VW200
Network 2
LD I0.0
ATT VW100, VW200
After execution of ATT
VW200 0006
VW202 0003
VW204 5431
VW206 8942
VW208 1234
VW210 xxxx
VW212 xxxx
VW214 xxxx
Chapter 6
TL (max. no. of entries)
EC (entry count)
d0 (data 0)
d1 (data 1)
d2 (data 2)
189