User manual

6 DetaileddescriptionsofI/Omodules | Digital input module with time stamp UR20-2DI-P-TS
137Manual u-remote1432790000/08/12.2015
Time stamp function
With time stamp function (ETS = edge time stamp) enabled,
at every corresponding edge the time value of the timer is
stored in the process image as an ETS entry together with
the status of the inputs and a running number.
The module does not use any bytes in the output range. It
uses 60Bytes in the input range for 15ETS entries each
with 4bytes.
Structure of an ETS entry
Input image
PII
After the edge transition, the status of the inputs
is stored here. The input byte has the following
bit assignments:
Bit 0: DI0
Bit 1: DI1
Bit 2
… 7: reserved (0)
Running
Nummer
RN
The RN (running number) is a consecutive num-
ber from 0 to 127. It describes the chronologi-
cal sequence of the edges.
Time stamp
ETS_US
The 16-bit timer (0 ... 65535μs) in the u-remote
module is started as soon as the power supply
ist switched on and after (2
16
-1)μs restarts at 0.
t
0 µs 0 µs 65535 µs65535 µs
Adr. PII RN ETS_US
+16 PII-4 RN-4 ETS-US-4
+12 PII-3 RN-3 ETS-US-3
+8 PII-2 RN-2 ETS-US-2
+4 PII-1 RN-1 ETS-US1
+0 PII-0 RN-0 ETS-US-0
Structure of the ETS entries in the input range in chronological order.