Specifications
IP 240 System Overview
1 System Overview
Intelligent input/output modules (I/Os) extend the field of applications of the SIMATIC S5
programmable controller system. They are technology-oriented and off-load the central pro-
cessor by preprocessing the input signals.
Digital input modules can resolve pulses up to a frequency of 100 Hz. The IP 240 can be used for
applications with higher frequencies and for connecting incremental encoders.
The module can be used in four modes:
• Position decoding
• Counting
• IP 252 expansion (only in the S5-115U programmable controller)
• Positioning
It is configured in the desired mode by the user program.
Fig. 1-1. Modes of the IP 240 Module
M
int
5 V
•
•
S5 bus
Interrupt circuit
•
Outputs, channel 2
Position decoding
Counting
IP 252 expansion
Positioning
IP 240
Outputs, channel 1
Position decoding
Positioning
•
Counting
IP 252 expansion
Configuration
for channel 1
Configuration
for channel 2
EWA 4NEB 811 6120-02a
1-1