文档介绍：Spring ‘11 Lab 9 – Proximity Sensors and PLC Introduction Lab 9-1
Lab 9 – Proximity Sensors and PLC Introduction
Format
This lab will be conducted during your regularly scheduled lab time in a group format.
Rotate roles during the lab - don't let one person do all of the programming at puter.
You may ask the lab instructor for assistance if needed, but pletion of the lab
is your responsibility – not theirs!
Report
A short, informal, group report is due at 8:00 AM on the Friday of the week after you
complete this lab. This short report does NOT need to follow the formal report format
described in the ME 360 course manual. All of the information specifically requested in this
lab handout should be present in your report.
Procedures
Testing Different Proximity Switches:
Several different proximity switches will be provided. Each group will need to connect
power (+12V) and ground to the proximity switches and read the output voltage with a
DMM. Most of the proximity switches will have a small wiring diagram label attached to
the sensor or supplied with the packaging. A typical wiring arrangement is shown below in
Figure 1.
Note that the proximity switch manufacturers do NOT use the ME 360 color code!
If the resistor symbol is shown on the label, then try a 10 k resistor first. If no resistor
symbol is shown on the label, try