This section contains information on the following topics:
- Overview of the S7 communication instructions (S7-300, S7-400)
- Data consistency (S7-300, S7-400)
- Common parameters of instructions for S7 communication (S7-300, S7-400)
- Startup characteristics of instructions for S7 communication (S7-300, S7-400)
- Error behavior of instructions for S7 communication (S7-300, S7-400)
- GET: Read data from a remote CPU (S7-300, S7-400)
- PUT: Write data to a remote CPU (S7-300, S7-400)
- USEND: Send data uncoordinated (S7-300, S7-400)
- URCV: Receive data uncoordinated (S7-300, S7-400)
- BSEND: Send data in segments (S7-300, S7-400)
- BRCV: Receive data in segments (S7-300, S7-400)
- C_CNTRL: Query connection status (S7-300)
- Others (S7-300)
- CONTROL: Determine connection status for the instance of an instruction (S7-400)
- PRINT: Send data to printer (S7-400)
- START: Execute a warm restart or cold restart on a remote device (S7-400)
- STOP: Change a remote device to STOP mode (S7-400)
- RESUME: Initiate a hot restart on a remote device (S7-400)
- STATUS: Query the status of a remote partner (S7-400)
- USTATUS: Uncoordinated receiving of remote device status (S7-400)