The IM 155-5 PN BA / ST / HF interface module is screwed directly onto the S7-1500 rail. It incorporates:

• Diagnostics displays for errors (Error), operation (RUN), maintenance (MAINT), and one link LED per port
• Connection to PROFINET using RJ45 connector
• 24 V DC supply unit for looping through the supply voltage
• Protection of interface module against unauthorized access possible using lock, seal or cable tie