Siemens SIMATIC S7 System Manual page 840

References
E.4 STL instructions
Interrupt instructions
STL
CRETI
ENI
DISI
ATCH INT, EVNT
DTCH EVNT
CEVENT EVNT
Communications instructions
STL
GET
PUT
XMT TBL, PORT
RCV TBL, PORT
GIP ADDR, MASK, GATE
SIP ADDR, MASK, GATE
GPA ADDR, PORT
SPA ADDR, PORT
Note
The CPU models CPU CR20s, CPU CR30s, CPU CR40s, and CPU CR60s have no
Ethernet port and do not support any functions related to the use of Ethernet
communications.
840
Description
Conditional Return from Interrupt
Enable Interrupts
Disable Interrupts
Attach Interrupt routine to event
Detach event
Clear all interrupt events of type EVNT
LAD/FBD
Reads remote station data
Writes data to a remote station
Freeport transmission
Freeport receive message
Get CPU address, subnet mask, and gateway
Set CPU address, subnet mask, and gateway
Get Port Address
Set Port Address
System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART