Siemens SIMATIC ET 200S Operating Instructions Manual page 180

1Count5V/500kHz
3.7 Measurement Modes
Limit-Value Monitoring
The following value ranges are permitted for limit-value monitoring:
1 μs resolution
Low limit T
0 to 119 999 999 µs
1/16 µs resolution
Low limit T
0 to 1 919 999 999 µs
Possible Measuring Ranges with Error Indication
1 µs resolution
1/16 µs resolution
Function of the Digital Input
For the "Function DI" parameter, select one of the following functions for the digital input:
• Input
• HW gate
180
u
u
Period
T ± absolute error
min
1 µs* (10 ± 0)
1 µs* (100 ± 0)
1 µs* (1 000 ± 0)
1 µs* (10 000 ± 1)
Period
T ± absolute error
min
1/16 µs* (160 ± 1)
1/16 µs* (1 600 ± 1)
1/16 µs* (16 000 ± 3)
1/16 µs* (160 000 ± 20)
High limit T
o
T +1 to 120 000 000 µs
u
High limit T
o
T +1 to 1 920 000 000 µs
u
Period
T ± absolute error
min
1 µs* (100 000 ± 10)
1 µs* (1 000 000 ± 100)
1 µs* (10 000 000 ± 1 002)
1 µs* (100 000 000 ± 10 020)
Period
T ± absolute error
min
1/16 µs* (1 600 000 ± 160)
1/16 µs* (16 000 000 ± 1 600)
1/16 µs* (160 000 000 ± 16 000)
1/16 µs* (1 600 000 000 ± 160 000)
Operating Instructions, 02/2007, A5E00124867-05
Technological Functions