Siemens SIMATIC S7-1500T System Manual

Basics of program execution
10.5 Asynchronous instructions
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
339
Extended instructions
1513R-1 PN
1515R-2 PN
1517H-3 PN
1518HF-4 PN
File handling
FileReadC
10
FileWriteC
10
FileDelete
10
Reference information
ResolveSymbols
10
1)
If you use the instruction WRIT_DBL (SFC84) to write data structures greater than 64 KB into the
load memory, the response times in the R/H-CPU user program can increase.
Recommendation: Only supply the formal parameter SRCBLK of the instruction WRIT_DBL with da-
ta structures with a maximum size of 64 KB. Split larger data structures into several smaller sub-
structures during writing.
Communication: maximum number of simultaneously running jobs
Table 10- 8 Maximum number of simultaneous jobs for asynchronous instructions and lower-level in-
structions used for Open User Communication
Open User Communi-
cation
1513R-1 PN
1515R-2 PN
1517H-3 PN
1518HF-4 PN
Up to
V3.0.
x
V3.1
or
high-
er
up to
V2.9.x
Up to
V3.0.
x
V3.1
or
high-
er
Up to
V3.0.x
V3.1
or
higher
Up to
V3.0.x
V3.1
or
higher
TSEND
TUSEND
88
128
108
128
256
288
320
320
384
TRCV
TURCV
88
128
108
128
256
288
320
320
384
TCON
88
128
108
128
256
288
320
320
384
TCONSettings
88
128
108
128
256
288
320
320
384
TDISCON
88
128
108
128
256
288
320
320
384
T_RESET
88
128
108
128
256
288
320
320
384
T_DIAG
88
128
108
128
256
288
320
320
384
TSEND_C
uses TSEND, TUSEND, TRCV, TCON, TDISCON
TRCV_C
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON
Table 10- 9 Lower-level instructions used for asynchronous instructions for MODBUS TCP
MODBUS TCP
1513R-1 PN
1515R-2 PN
1517H-3 PN
1518HF-4 PN
MB_CLIENT
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON
MB_SERVER
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON

Siemens SIMATIC S7-1500T Specifications

General

Brand	Siemens
Model	SIMATIC S7-1500T
Category	Controller
Language	English