Siemens SIMATIC ET 200S - Page 76

Configuration Options
3-12
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Table 3-4 Electronic modules and the applications for which they are suitable
Applications Electronic module
• Detection and evaluation of
path positions by means of
a
b
s
o
l
u
t
e
p
o
s
i
t
i
o
n
e
n
c
o
d
e
r
s
Absolute position encoder:
13 bits/21 bits/25 bits
1SSI
a
b
s
o
l
u
t
e
p
o
s
i
t
i
o
n
e
n
c
o
d
e
r
s
(SSI)
• Simple positioning tasks
• Driving power circuits of
stepper motors
• Positioning stepper motors
5 V pulses up to 204 kHz EM 1STEP 5V/204kHz
• Output of pulses in 4
different operating modes
Min. pulse duration of
200 µs
2PULSE
• Controlled positioning,
incremental encoder
5V differential signals
Drive c ontrolled by means
of digital outputs: travel
minus, travel plus, rapid
traverse/creep speed
1POS INC/Digital
Drive c ontrolled by means
of analog output
+10 V
1POS INC/Analog
• Controlled positioning, SSI
sensor
Drive c ontrolled by means
of digital outputs: travel
minus, travel plus, rapid
traverse/creep speed
1POS INC/Digital
Drive c ontrolled by means
of analog output
+10 V
1POS INC/Analog
• RS232C/RS422/RS485
i
l
d
t
t
i
i
ASCII and 3964(R) protocol 1SI 3964/ASCII
serial data transmission
Protocol mode and USS 1SI Modbus/USS
• Reservation of a slot for
l
i
d
l
Width15mm RESERVE
any electronic module
Width30mm