Input/output modules
Hardware - SIMADYN D
5-33
Edition 12.2004
5
5.4 Expansion module IT42
6DD1606-4AB0
The IT42 expansion module provides
analog and binary inputs and outputs
The expansion module is inserted on a CPU module (PM5, PM6). A
maximum of 2 expansion modules ITxx can be inserted on a CPU module.
An ITxx occupies 1 slot (in addition to the mounting slot of the CPU module
itself).
•
4 analog outputs
•
4 integrating, high-resolution analog inputs
(V/fc voltage/frequency conversion)
•
4 analog inputs (ADU)
•
16 binary outputs
•
16 binary inputs
T filter
Driver
50 mA
driver
Latch
D
A
D
A
D
A
D
A
+
-
M
U
X
A
D
Dual
port
RAM
IT42
controller
Local expansion bus
P5 M P15 N15
Electrical isolation
16 binary inputs
16 binary outputs
Analog outputs
Analog inputs
UFC
UFC
...
UFC
UFC
Counter 1/2
Counter 3/4
12 bit
16 bit
Integrating
analog inputs
External trigger
inputs
Co
nt
r.
b
u
s
D
a
ta
b
u
s
A
d
d
ress
bu
s
Fig. 5-8 Block diagram of IT42
Order No.
Description
Inputs and outputs
Block diagram
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