Siemens SIMATIC S7 - BASP Interpretation; Clock Selection

Operation
3–29
IP244B
C79000–B8576–C865–01
The following table specifies the maximum actual values that can be read:
Conversion
time
Sensor type
50 ms
Jumper D open
°C °F
55 ms
Special function
°C °F
60 ms
Jumper D inserted
°C °F
80 ms
Pt 100 mode
°C °F
Type L
Type J
Type K
Type S
Type R
Pt 100
460 861
467 874
616 1141
3063 5547
2100 3812
 Ć Ć
678 1254
688 1270
926 1700
3063 5547
2100 3812
 Ć Ć
878 1612
889 1632
1265 2310
3063 5547
2100 3812
 Ć Ć
ĆĆ
ĆĆ
ĆĆ
ĆĆ
ĆĆ
850 1562
Please refer to DIN 43710 or IEC 584 for the characteristic curves of the thermocouples. The Pt
100 curve has been taken from DIN 43760. The characteristic curves of the valid sensors are
linearized internally by the firmware. The sensors are selected by configuration (see Section 3
of this Manual).
The maximum actual values that can be read are indicated in an openĆwire situation.
3.4.3 Clock Selection
The integration time can be selected to obtain maximum noise suppression at 50 Hz or 60 Hz
mains frequency.
X6X6
5-6 7-8 Integration time
  x 50-Hz mains noise suppression (20 ms)
  x 60-Hz mains noise suppression (16
2/
3
 ms)
2468
X6
1357
3.4.4 BASP Interpretation
The BASP signal can either be interpreted or interpretation can be disabled by the X12/1–2
jumper. BASP = 1 resets the output registers.
X12/1–2 open: BASP signal is not interpreted
X12/1–2 inserted: BASP signal is interpreted
If BASP is not interpreted, additional external measures or devices must ensure that the
machine is forced to a safe operating state in the event of a malfunction (cf IEC 204–1).
In STOP mode, the S5 CPU is unable to respond to error messages from the IP (e.g.
actual value too high; watchdog, ...).