Beckhoff EL3182 Documentation page 107

The operating modes of the EL30xx are:
Mode 1 (default)
Filter (Index: 0x8000:06) On (default.:
Distributed Clocks
mode
Possible with EL30xx
Possible with EL30xx
Default setting for
Synchronization mode 0: FreeRun (de-
(index:0x1C33:01, bit 0)
FastOp-Mode "CoE" (In-
dex: 0x1C33:01, bit 15)
StartUp entry index
0x1C33:01
Update frequency depends on filter setting; automatically set inside
typical data update time 50 Hz FIR: typi-
(EL30x1)
typ. data update time
60 Hz FIR: typi-
(EL30x2)
typ. data update time
IIR: typical 1 ms
(EL30x4)
typ. data update time 50 Hz FIR: typ.
(EL30x8)
60 Hz FIR: typ.
IIR: typ. 1 ms
Note If filtering is en-
abled, the fol-
lowing settings
are activated in
the EL30xx,
irrespective of
other settings
"FreeRun" = on
"FastOp mode"
Combinations of filters, FastOp mode and Synchronization mode
Other combination options of filter, FastOp mode and Synchronization mode are expressly not rec-
ommended.
Synchron mode
In synchronous operation process data are generated frame-triggered, so that a new value is available with
each PLC cycle. In the EL31xx terminals synchron mode is used automatically (filter off, no DC). The
minimum cycle times are 80 µs (EL31x1/EL31x2), and 120 µs (EL31x4) for standard IPCs.
DC operation
In DC mode the process data are requested via DC interrupt. This results in the temporal jitter between two
frames being equalized, so that the sampling time is uniform across the system.
The EL31xx should be operated in DC input based mode.
The DC mode requires minimum cycle times of
• 100 µs (EL31x1/EL31x2 in 1 channel mode)
EL3182
2
50 Hz FIR)
x x
x x
EL30xx
0: FreeRun (default)
fault)
Off (default) Off (default)
0x0000 0x0000
the terminal
see following values
< 600 µs
cal 625 µs
cal 520 µs
< 1.1 ms
1.25 ms
1 ms
and
= off.
3 4
Off
Off
x x
x x
EL31xx
1: Frame triggered (SM3 inputs)
On Off (default)
0x8000 0x0001
EtherCAT cycle time, if value does
not fall below the lower setting-de-
pendent limit. See following values
Operation with a faster EtherCAT
cycle is possible, but in that case
the EL30xx no longer supplies new
data in each cycle.
< 500 µs
< 1 ms
Version: 1.2
Commissioning
5 6
x
x
3: DC mode
On Off (default)
(FastOP mode
n.a. in DC mode)
0x8001
EtherCAT cycle
time, if value does
not fall below the
for typical limit. lower setting-de-
pendent limit.
The notes on the
minimum Ether-
CAT cycle time in
DC mode must be
On
x
On
observed.
107