Siemens SIMATIC ET 200SP System Manual page 130

Basics of program execution
7.3 Asynchronous instructions
Basic instructions: Maximum number of asynchronous instructions
The following table shows the maximum number of simultaneously running instances for
asynchronous basic instructions
Basic instructions
Array DB
ReadFromArrayDBL
WriteToArrayDBL
Communication: Maximum number of asynchronous instructions
The following table shows the maximum number of simultaneously running jobs for
asynchronous instructions (Open User Communication) for the various CPUs.
Open User Communication
TSEND
TUSEND
TRCV
TURCV
TCON
TDISCON
T_RESET
T_DIAG
T_CONFIG
TSEND_C
TRCV_C
TMAIL_C
The following table shows the maximum number of simultaneously running jobs for
asynchronous instructions (MODBUS TCP) for the various CPUs.
MODBUS TCP
MB_CLIENT
MB_SERVER
130
CPU 1510SP-1 PN
CPU 1510SP F-1 PN
uses READ_DBL (see Extended instructions)
uses READ_DBL, WRIT_DBL (see Extended instructions)
CPU 1510SP-1 PN
CPU 1510SP F-1 PN
64
64
64
64
64
64
uses TSEND, TUSEND, TRCV, TCON, TDISCON
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON
CPU 1510SP-1 PN
CPU 1510P F-1 PN
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON
uses TSEND, TUSEND, TRCV, TURCV, TCON, TDISCON
CPU 1512SP-1 PN
CPU 1512SP F-1 PN
CPU 1512SP-1 PN
CPU 1512SP F-1 PN
88
88
88
88
88
88
1
CPU 1512SP-1 PN
CPU 1512SP F-1 PN
System Manual, 12/2015, A5E03576849-AF
Distributed I/O system