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Multiturn absolute encoder

FSM58

4

Input for selection of counting direction (V/R)

The counting direction for the absolute value rotary encoder as seen looking on the shaft is defined as right rotating (cw) rising or descending. The counting

direction can be reversed with the V/R input. If the input is not used, the counting direction is defined as rising (standard), the level is at "1". Pulse duration

T > 10 ms.

Input level: "1" or unused = rising code value with direction of rotation cw.

Input level: "0" = descending code value for direction of rotation cw.

Input for temporary storage (LATCH)

With LATCH input "active", the position data on the parallel interface are "frozen". This makes it possible to accept position data without errors (especially

for binary position data), since any change in the data during the read procedure is prevented. If this input is unused, its value is "0". Pulse duration T > 100

µs.

Input level: "1" = position data saved and stable at the output.

Input level: "0" or unused = position data free running at the output.

Input zero setting (PRESET)

By means of the PRESET input, the absolute value rotary encoder can be adjusted electronically to position value 0. Pulse duration T > 10 ms.

Input level: "0" or unused = inactive.

Input level: "1" = Data output word is set to 0.

Inputs

Input for temporary storage (LATCH)

IN

Logic

Pull down

Input for selection of counting direction (V/R)

IN

Logic

Pull up

Filter

Filter

⊥

⊥

Input level: "0" 0 V ... 2 V

,

"1" 10 V ... 30 V,

Input zero setting (PRESET)