Constants

Name

Value

Description

MAX_NLINK_BUFFER_SIZE

16#FFFF

Max. internal buffer size for RX/TX (64k)

MAX_NLINK_DATALEN

2048

Max. data length supported by the PLC blocks for transfers. The actual max. length may be smaller due to specific device characteristics.

MAX_NLINK_HEADERLEN

16

Max. length of the frame header for the NL-MPI and IBHNet protocols.

MAX_NLINK_MPI_CONNECTIONS

16

Max. number of open MPI connections. If this number is exceeded, the oldest connections are closed automatically.

Requirements

Development environment

Target platform

PLC libraries to be linked

TwinCAT v2.11.0 Build > 1536

PC or CX (x86, ARM)

TcS5S7Comm.Lib