Siemens Simatic S7-1500 - Page 339

Basics of program execution
10.5 Asynchronous instructions
S7-1500R/H redundant system
338 System Manual, 01/2024, A5E41814787-AF
Note
Lower
-level asynchronous instructions
Some asynchronous instructions use one or more lower
-level asynchronous instructions for
their processing. This dependence is shown in the
tables below.
Please note that each lower
-level instruction typically occupies one resource in the
instruction's resource pool.
Extended instructions: maximum number of simultaneously running jobs
Table 10- 7 Maximum number of simultaneous jobs for asynchronous extended instructions and
lower-level instructions used
Extended instructions
1513R-1 PN
1515R-2 PN
1517H-3 PN
1518HF-4 PN
Distributed I/O
RDREC
20
WRREC
20
ASI_CTRL
uses RDREC, WRREC
PROFIenergy
PE_START_END
uses RDREC, WRREC
PE_CMD
uses RDREC, WRREC
PE_DS3_Write_ET200S
uses RDREC, WRREC
PE_WOL
uses RDREC, WRREC, TUSEND, TURCV, TCON, TDISCON
Module parameter assignment
RD_DPAR
10
RD_DPARA
10
RD_DPARM
10
Diagnostics
Get_IM_Data
10
GetStationInfo
10
Recipes and data logging
RecipeExport
10
RecipeImport
10
DataLogCreate
10
DataLogOpen
10
DataLogWrite
10
DataLogClear
10
DataLogClose
10
DataLogDelete
10
DataLogNewFile
10
Data block functions
CREATE_DB
10
READ_DBL
10
WRIT_DBL
1)
10
DELETE_DB
10