Siemens SINUMERIK ONE NCU 1740 Equipment Manual page 138

Connectable components
12.2 PP 72/48D PN and PP 72/48D 2/2A PN
Note
If a Pt100 element is accidentally not connected in this operating mode and an input voltage
higher than 0.25 V is connected, the analog module automatically switches to the "No operating
mode" operating mode and resets the gain factor to "1". This is signalized in Status Word 0
(channel-specific) in the input image. In addition, a corresponding error code is output for
the diagnostics at a counter value of "2" (Page 141).
In the case of operation without a Pt100 element, a slightly negative voltage may be applied,
which results in an error/fault status for the module. Here, the "PNFault" LED and the status byte
1 are to be observed.
Analog outputs
Table 12-33
16-bit value (hex.)
Overflow
Overrange
0x6666
0x4CD1
0x199B
0x0000
0xE665
0xB32F
0x999A
Underrange
Underflow
Table 12-34
16-bit value (hex.)
Overflow
Overrange
0x6666
0x4CD1
0x199B
0x0000
0xE665
0xB32F
0x999A
Underrange
Underflow
138
Measured values in the "voltage output" operating mode
16-bit value (dec.)
26214
19665
6555
0
-6555
-19665
-26214
Measured values in the "current output" operating mode
16-bit value (dec.)
26214
19665
6555
0
-6555
-19665
-26214
Factor
-
-
0.00038
-
-
Factor
-
-
0.00076
-
-
Equipment Manual, 09/2022, A5E51087503B AC
Voltage value [V]
Deactivation
Up to 10.5 V
10 V
7.5 V
2.5 V
0 V
-2.5 V
-7.5 V
-10 V
Up to -10.5 V
Deactivation
Current value [mA]
Deactivation
20.2 mA
20 mA
15 mA
5 mA
0 mA
-5 mA
-15 mA
-20 mA
-20.2 mA
Deactivation
NCU 1740