Specifications

CP143 H1 / TCP/IP manual The CP143 H1 / TCP/IP network board
Rev. 00/07 4-15
4.3.2 The structure of the CP143 TCP/IP
Fig. 4-5:The structure of the CP143 TCP/IP
Dual-port-RAM (DPR)
PLC-Interrupt
Interrupt handler and task
PG-Interrupt
Interrupt handler and task
TCP-IP Application
The application consists of n
tasks. That is, a new task is
generated and administered
for every configured connec-
tion.
Tools
• List processing
• access routines
• All-HTB-coordinator
• ...
Operating system
The operating system is
divided into three independent
units.
A real-time kernel defines the
interface for tasks and hand-
lers
System-Boot
Synchronous supervision
• The initialization task scans
the parameter sets.
• The synchronization task
checks switch settings and
controls the indicators
located on the CP
TP4-API-Calls
Libraries containing access
functions for the TP4-protocol
TCP/IP
protocol stack