Product overview
EL37x2
21
Version: 3.5
As the name suggests, the data block consisting of sample value+timestamp, which is transferred in each
cycle, is not related. The relationship is shown in Fig.
Temporal relationship between SYNC signals and
SyncManager interrupt
. To explain in more detail:
• the example is based on an oversampling factor of 5
• The SYNC0 signal in the terminal triggers the AD conversion and fills the internal buffer with 5
measured values (A).
• SYNC1, which triggers the filled buffer to be made available as process record and at the same time
fetches the
StartTimeNextLatch
from the local distributed clock (B), runs synchronous with the cycle
time.
• The data block is linked with the next but one LatchTime.
• The next EtherCAT cycle fetches this data (C).
Fig. 12: Temporal relationship between SYNC signals and SyncManager interrupt
Process data
Analog values are represented as follows:
Input signal
Value
EL3702
Decimal
Hexadecimal
-10 V
-32767
0x8001
+10 V
+32767
0x7FFF
Input signal
Value
EL3742
Decimal
Hexadecimal
0 mA
0
0x0000
20 mA
+32767
0x7FFF
The terminal is adjusted during production. No further user intervention is required.
Input characteristics
The input circuit of this terminal is optimized for higher-frequency signals up to around 30 kHz, i.e. the
recommended bandwidth of the wanted signal is 0 Hz to 30 kHz in the range -10 V to +10 V or 0 mA to
20 mA. In this frequency range the typical measuring accuracy is as follows:
Summary of Contents for EL3702
Page 2: ......
Page 6: ...Table of contents EL37x2 6 Version 3 5...
Page 83: ...Commissioning EL37x2 83 Version 3 5 Fig 92 Incorrect driver settings for the Ethernet port...
Page 142: ...Commissioning EL37x2 142 Version 3 5 Fig 184 Process data tab SM0 EL37x2...
Page 143: ...Commissioning EL37x2 143 Version 3 5 Fig 185 Process data tab SM1 EL37x2...
