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Signal Names
A, A_N
B, B_N
N, N_N
CLS, CLS_N
DATA, DATA_N
P5EXT
P24EXT
MEXT
Signal Type
VO
O
I
Connectable
Incremental or absolute (SSI) encoders may be connected directly (e.g. digi-
Encoder Types
tal-rotary encoders); they are then selected via machine data.
Encoders with SINE/COSINE signals (e.g. length scales) may be connected
by way of an external electronic pulse shaper (EXE) that converts the signals
to 5 V levels.
Encoder Charac-
Both encoders that can be connected directly and EXEs must meet the fol-
teristics
lowing requirements:
Incremental Encoders
Transfer procedure:
Output signals:
Maximum output
frequency:
Phase shift, track
A to B:
Power consumption:
Absolute Encoders (SSI)
Transfer procedure:
Output signals:
Input signals:
Resolution:
Maximum transfer frequency: 1.25 Mbps
Power consumption:
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Track A true / negated (incremental encoder)
Track B true / negated (incremental encoder)
Zero mark true / negated (incremental encoder)
SSI sliding pulse true / negated (absolute encoder)
SSI data true / negated (absolute encoder)
Power supply +5.2 V (encoder)
Power supply +24 V (encoder)
Power supply ground (encoder)
Voltage outlet (power supply)
Output (5 V signal)
Input (5 V signal)
Differential transfer with 5 V rectangular
signals
(such as RS422 standard)
Track A as true and negated signal (U
Track B as true and negated signal (U
Zero signal N as true and negated signal
(U
, U
)
a0
a0
1 MHz
90
30
Max. 300 mA
Synchronous-serial interface (SSI) with
5 V differential-signal transfer
signals
(such as RS422 standard)
Data as true and negated signal
Sliding pulse as true and negated signal
Not more than 25 bits
Max. 300 mA
Wiring the FM 453
, U
)
a1
a1
, U
)
a2
a2
4-17
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