Fiber optic remote I/O master module for DL405 PLC
The Ethernet Remote Master H4-ERM-F connects D4-430, D4-440 and D4-450 PLC systems to slave I/O over a 10Mbps high-speed Ethernet link. Each ERM-F module can support up to 16 additional H2-EBC-F systems or 16 fully expanded H4-EBC-F systems. Of course, combinations are fine, too.
The ERM-F connects to your control network using fiber optic cables and can be run up to 2 kilometers. Use fiber optic repeaters to extend distances and expand the number of nodes.
The PLC, ERM and EBC slave modules work together to update the remote I/O points. These three scan cycles are occurring at the same time, but asynchronously. It is recommended that critical I/O points that must be monitored every scan be placed in the CPU base.