Siemens NCU 7x0.3 PN Series Manual page 139

Assigning parameters to the analog inputs
The analog inputs (AI) can be operated in the following operating modes:
Operating mode 1st channel
No operating mode
Voltage measurement
Current measurement
Temperature measurement (Pt100)
Operating mode 2nd channel
No operating mode
Voltage measurement
Current measurement
Temperature measurement (Pt100)
Assigning parameters to the analog outputs
The analog outputs (AO) can be operated in the following operating modes:
Operating mode 3rd channel
No operating mode
Voltage output
Current output
Impermissible operating mode
Operating mode 4th channel
No operating mode
Voltage output
Current output
Impermissible operating mode
Checkback signal of the operating modes
The set operating modes are saved in the input image in Status Byte 0. This value must be
compared with Control Byte 0 in the output image. If these are different, an error has
occurred, e. g. in the case of overvoltage in the "Temperature measurement" operating
mode, see Diagnostics via input image (Page 145).
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0
Connectable components
9.3 PP 72/48D 2/2A PN
Bit 1 Bit 0
0 0
0 1
1 0
1 1
Bit 3 Bit 2
0 0
0 1
1 0
1 1
Bit 5 Bit 4
0 0
0 1
1 0
1 1
Bit 7 Bit 6
0 0
0 1
1 0
1 1
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