Types

Python equivalent for snap7 specific types.

class snap7.type.Area(*values)

The snap7 area types

snap7.type.Areas

alias of Area

class snap7.type.Block(*values)

The snap7 block type

class snap7.type.BlocksList

The snap7 block list structure

class snap7.type.Parameter(*values)

The snap7 parameter types

class snap7.type.S7CpInfo

S7 Cp class for Communication Information :

• MaxPduLength => Size of the maximum PDU length in bytes

• MaxConnections => Max connection allowed to S7-CPU or Server

• MaxMpiRate => MPI rate (MPI use is deprecated)

• MaxBusRate => Profibus rate

Every data packet exchanged with a PLC must fit within the PDU size, whose is fixed from 240 up to 960 bytes.

class snap7.type.S7CpuInfo

S7CpuInfo class for handling CPU with :

• ModuleTypeName => Model of S7-CPU

• SerialNumber => SN of the S7-CPU

• ASName => Family Class of the S7-CPU

• Copyright => Siemens Copyright

• ModuleName => TIA project name or for other S7-CPU, same as ModuleTypeName

class snap7.type.S7OrderCode

class snap7.type.S7Protection

See §33.19 of System Software for S7-300/400 System and Standard Functions

class snap7.type.S7SZL

See §33.1 of System Software for S7-300/400 System and Standard Functions

class snap7.type.S7SZLHeader

LengthDR: Length of a data record of the partial list in bytes NDR: Number of data records contained in the partial list

class snap7.type.S7SZLList

class snap7.type.SrvArea(*values)

The snap7 server area types

NOTE: these values are DIFFERENT from the normal area IDs.

class snap7.type.SrvEvent

The snap7 server event structure

class snap7.type.TS7BlockInfo

class snap7.type.WordLen(*values)

The snap7 word length types

snap7.type.buffer_type

alias of c_ubyte_Array_65536