Siemens SIMATIC S7-300 Reference Manual page 53

Basic instructions
Instructions in the section "Communication"
Instruction groups
PROFINET and PROFIBUS
S7 communication
Open User Communication
WEB server
PROFINET and PROFIBUS
✔ ✔ ✔
Safety only: Fail-safe sending of data via
PROFIBUS DP/PROFINET IO
✔ ✔ ✔
Safety only: Fail-safe receiving of data via
PROFIBUS DP/PROFINET IO
S7 communication
✔ ✔ ✔ ✔
Read data from a remote CPU
✔ ✔ ✔ ✔
Write data to a remote CPU
✔ ✔ ✔
Send data uncoordinated
A5E33285102-AB
Extended instructions
Page Instruction groups
52 Fail-safe HMI Panels
52 Modbus TCP
54 Communications processors
55 S7-300C functions
Description
Technology
Page Instruction groups
55 Communication w. iSlave /iDevice
56 PROFINET CBA
57 MPI communication
65 TeleService
STL
LAD / FBD
(not S7-1200)
SENDDP
RCVDP
GET
PUT
USEND
Communication
Page
66
66
66
67
SCL
Page 52