Operating instructions

Absolute Rotary Encoders
55
Pepperl+Fuchs Inc. • 1600 Enterprise Parkway • Twinsburg, Ohio 44087-2245 • www.am.pepperl-fuchs.com
Telephone [phone] • FAX [phone] • E-Mail: [e-mail]
®
PEPPERL+FUCHS
Absolute Encoders FSS58/FSM58 Series
Programming
Inputs
Input Level
“0” : 0 V to 2 V
“1” : 10 V to 30 V
I
e
: < 6 mA
LATCH Input (temporary storage)
With the latch input high, the position data on the parallel interface is “frozen.” This
allows for the position to be read without errors due to changing bits. If this input is
not used its value is “0.” Pulse duration T > 100 µs.
Input level: “0” or unused = Position data operating normally
at the output, possibly changing.
“1” = Position data saved and stable
at the output.
PRESET Input (zero setting)
The encoder can be electronically set to position 0 with the PRESET input.
Response time: T > 10 ms
Input level: “0” or unused = Inactive
“1” = Output word is set to 0
V/R Input (selection of counting direction)
The counting direction of the encoder (when looking at the shaft end) is defined as
clockwise rising or declining. The counting direction can be reversed with the V/R
input. If the input is not used, the counting direction is rising by default, the level is
at “1.” Pulse duration T > 10 ms.
Input level: “1” or unused = rising code value for
clockwise rotation.
“0” = declining code value for
clockwise rotation.
IN
Filter
Logic
Pull down
U
e
IN
Logic
Pull up
U
e
Filter
L6374
RL1
RL2
Logic
Interface electronicsRotary encoder
Output
Logic
Input
data
Logic
Power
filter
GND (DP)
U
a
24 V
0 V
DP
GND (DP)
GND (rotary encoder)
U
B
(rotary encoder)
U
b
supply
IN
Filter
Logic
Pull down
U
e
IN
Logic
Pull up
U
e
Filter
L6374
RL1
RL2
Logic
Interface electronicsRotary encoder
Output
Logic
Input
data
Logic
Power
filter
GND (DP)
U
a
24 V
0 V
DP
GND (DP)
GND (rotary encoder)
U
B
(rotary encoder)
U
b
supply
LATCH
PRESET
V/R