Siemens SIMATIC 505 - Logic Program Management

Software Interface
2-4
2.2 Normal I/O Interface
The normal I/O interface is used for handshaking and status reporting
between the PLC and the T
urboPlastic module.
The T urboPlastic module is mapped as a four -word-in, four -word-out, special
function I/O module with assignments as illustrated in Figure 2-1.
PLC word
address
WX1
WX2
WX3
WX4
WY5
WY6
WY7
WY8
Module status
Cycle complete codes
Status codes
I/O channel
Start cycle instructions
Start of download table in V -memory
Start of upload table in V -memory
Module control (run/stop)
Inputs from module to PLC
Outputs from PLC to module
Figure 2-1 Module I/O Assignments