The E7 provides four (4) independent, fully isolated channels, each programmable as an SSI interface controller, an SSI “Listen Only” mode receiver, an incremental encoder reader, a Quadrature encoder counter or a general purpose counter. The E7 utilizes state-of-the-art galvanic isolation that is superior to alternative opto-coupler devices, therefore eliminating concerns about uncertain current transfer ratios, non-linear transfer functions and temperature/lifetime degradation effects.

• When programmed in the SSI controller mode, the channel will output a clock to the encoder and will receive the encoder positional data signal. The SSI controller has a programmable clock rate.
• When programmed in the SSI “Listen Only” mode, the channel will accept both the clock and positional data signal as inputs. The data word can be programmed in binary or gray codes with parity.
• When programmed as a Quadrature encoder counter, the channel can accept an index pulse in conjunction with the A and B signal inputs.
• When programmed as an incremental encoder, sub-programming options include pre-loadable up/down counters and 1x, 2x or 4x input format.
• When programmed as a general purpose counter, the channels are pre-loadable and can be controlled as an UP or DOWN counter which can be fed via a programmable internal clock source or an external signal trigger.