Remote Switch External Memory Selection (Contact Closure Switch Terminals) are detach-
able Euroblock connectors. A single pole switch, several single pole switches in different
locations, or up to an eight pole switch may be used depending on the number of presets
required. A third-party touch screen with a contact closure interface would also work well.
RS 232 Control DB9 Connectors; The INPUT connector receives direction from a PC
via a standard serial port, or is a loop-through from another RPE 228. The OUTPUT
connector extends the communications loop to the next unit — we even supply the 18”
interconnect cable.
Device Address dipswitches allow the unit to be identified as one of the
potentially 250 devices on-line in a system. This way, one computer can talk to
and program each unit separately.
In addition to the above connectors, the low voltage AC outboard power
supply (not a wall wart!!) not only powers the RPE 228, but enables the
unit to be UL exempt... and quiet, to boot!
In summary, the front panel is tamper-proof, so that no one can alter settings. And it
includes important information to help verify proper or improper function. The back panel
features switches, inputs and outputs, and control points that are easy to use and require no
additional connectors.
It goes without mentioning—but we do it anyway—that the chassis is robust and cold-
rolled steel for all kinds of strength and protection, from butterfingers to RFI.
So, that’s the product. And we are proud of it! But remember—the real secret of the
RPE 228 is the software.
