We have a new Web poll on ControlDesign.com. This poll asks machine builders like yourself what type of controller they use as part of their machine safety system?

• Safety relay(s) with hardwiring
• Programmable safety PLC with hardwiring
• Safety controllers
• Programmable safety PLC with mix of digital safety bus and hardwiring
• Programmable safety PLC with digital safety bus
• Programmable safety PLC on same bus as the machine controls
• None. Safety is the customer's problem 

This is just one of three questions we have posted for you to answer. What type  of controller do you use? Log on now and participate.