I/O modules • 205
Analog Inputs 750-472, -474
Modular I/O System
ETHERNET TCP/IP
Numerical format
The resolution of 750-472 and 750-474 are 15 Bit.
750-472, 750-474
Input
current
0-20mA
Input
current
4-20mA
Value
Binary
Hex.
Dec.
Status
LED
>20.5
>20.5
0111 1111 1111 1111
7F FF
32767
42
on
20
20
0111 1111 1111 1111
7F FF
32767
0
off
10
12
0100 0000 0000 0000
40 00
16384
0
off
5
8
0010 0000 0000 0000
20 00
8192
0
off
2.5
6
0001 0000 0000 0000
10 00
4096
0
off
0.156
4.125
0000 0001 0000 0000
01 00
256
0
off
0.01
4.0078
0000 0000 0001 0000
00 10
16
0
off
0.005
4.0039
0000 0000 0000 1000
00 08
8
0
off
0
4
0000 0000 0000 0000
00 00
0
0
off
0
3.5 - 4
0000 0000 0000 0000
0
0
0
off
0
0 - 3.5
0000 0000 0000 0000
0
0
41
(4-20mA)
on
(4-20 mA)
Numerical format for Siemens function blocks
For fieldbus masters with the ability to evaluate the status information within
the data word, i.e. Siemens format.
The status information is contained in Bit B0 .. B2.
The digitized input is placed at the position Bit B3 .. B15. The numerical for-
mat for 750-472/000-200 is equivalent to S5 463 and for 750-474/000-200 to
S5 460/465.
750-472/000-200, -474/000-200
Input current
4-20mA
Value
Binary
X E O
*)
Hex.
Dec.
Status
LED
32
0111 1111 1111 1
0 0 1
7F F9
32761
42
on
31.99
0111 1111 1111 0
0 0 0
7F F0
32752
0
on
20.5
0101 0010 0000 0
0 0 0
52 00
20992
0
on
20
0101 0000 0000 0
0 0 0
50 00
20480
0
off
16
0100 0000 0000 0
0 0 0
40 00
16384
0
off
12
0011 0000 0000 0
0 0 0
30 00
12288
0
off
8
0010 0000 0000 0
0 0 0
20 00
8192
0
off
4.0078
0001 0000 0000 1
0 0 0
10 08
4104
0
off
4
0001 0000 0000 0
0 0 0
10 00
4096
0
off
3.5
0000 1110 0000 0
0 0 0
0E 00
3584
0
on
0
0000 0000 0000 0
0 0 0
00 00
0
0
on
*)
X : without meaning, E : short circuit or open circuit, O : overflow