Oversampling settings in the "DC" tab

The basics of the oversampling function and the operation of the EL5031-0011 with the use of the SYNC0 pulse are explained in the section "Basics of the oversampling function".
The following chapter describes the setting of the various parameters with the Beckhoff TwinCAT System Manager.

In the "DC" (distributed clocks) tab, the oversampling factor and the size of the process data can be set in the selection dialog (see following figure):

Oversampling factor:

n = 1 ... 50 according to the selection displayed under "Operation Mode".

Size of the position values:

"Standard": 64 bits per position value
"Compact": 32 bits per position value

The oversampling factor n = 1 with a 64-bit position value ("Standard") is set on delivery.

When an entry is selected in the dialog, the correct sampling ratio at distributed clock level and the correct number of process data to be transmitted are set automatically.

Oversampling settings in the "DC" tab 1: — Setting the oversampling factor n = 4 and displaying the process data to be transmitted

Sampling times T_SYNC0 / n applicable to EL5031-0011

Oversampling factor for "Standard" (64-bit position) and "Compact" (32-bit position)	Cycle time (T_SYNC0)
	500 µs	1,000 µs	2,000 µs	5,000 µs
1	500.00 µs	1,000.00 µs	2,000.00 µs	5,000.00 µs
2	250.00 µs	500.00 µs	1,000.00 µs	2,500.00 µs
4	125.00 µs	250.00 µs	500.00 µs	1,250.00 µs
5	100.00 µs	200.00 µs	400.00 µs	1,000.00 µs
8	62.50 µs	125.00 µs	250.00 µs	625.00 µs
10	50.00 µs	100.00 µs	200.00 µs	500.00 µs
16	31.25 µs	62.50 µs	125.00 µs	312.50 µs
20	25.00 µs	50.00 µs	100.00 µs	250.00 µs
25	Not permitted*	40.00 µs	80.00 µs	200.00 µs

Further oversampling factors only for "Compact" (32-bit position)	Cycle time (T_SYNC0)
	500 µs	1,000 µs	2,000 µs	5,000 µs
32	Not permitted*	31.25 µs	62.50 µs	156.25 µs
40		25.00 µs	50.00 µs	125.00 µs
50		Not permitted*	40.00 µs	100.00 µs

*) not permitted, since_TSYNC0 / n < 25 µs

Sampling frequencies F_SYNC0 * n applicable to EL5031-0011

Oversampling factor for "Standard" (64-bit position) and "Compact" (32-bit position)	Cycle time (T_SYNC0)
	500 µs	1,000 µs	2,000 µs	5,000 µs
1	2.0 ksps	1.0 ksps	0.5 ksps	0.2 ksps
2	4.0 ksps	2.0 ksps	1.0 ksps	0.4 ksps
4	8.0 ksps	4.0 ksps	2.0 ksps	0.8 ksps
5	10.0 ksps	5.0 ksps	2.5 ksps	1.0 ksps
8	16.0 ksps	8.0 ksps	4.0 ksps	1.6 ksps
10	20.0 ksps	10.0 ksps	5.0 ksps	2.0 ksps
16	32.0 ksps	16.0 ksps	8.0 ksps	3.2 ksps
20	40.0 ksps	20.0 ksps	10.0 ksps	4.0 ksps
25	Not permitted*	25.0 ksps	12.5 ksps	5.0 ksps

Further oversampling factors only for "Compact" (32-bit position)	Cycle time (T_SYNC0)
	500 µs	1,000 µs	2,000 µs	5,000 µs
32	Not permitted*	32.0 ksps	16.0 ksps	6.4 ksps
40		40.0 ksps	20.0 ksps	8.0 ksps
50		Not permitted*	25.0 ksps	10.0 ksps

*) not permissible, as F_SYNC0 * n > 40 ksps

	Maximum sampling frequency, minimum cycle time Minimum sampling time (T_SYNC0 / n), maximum sampling frequency (F_SYNC0 * n) A sampling time (T_SYNC0 / n) of less than 25 μs is not permitted for the EL5031-0011! The maximum sampling frequency (F_SYNC0 * n) for the EL5031-0011 is therefore 40 ksps (samples per second). Minimum cycle time (T_SYNC0) The minimum cycle time of 500 µs with an oversampling factor of n = 20 must not be undershot.

Oversampling settings in the "DC" tab

Sampling times TSYNC0 / n applicable to EL5031-0011

Sampling frequencies FSYNC0 * n applicable to EL5031-0011

Sampling times T_SYNC0 / n applicable to EL5031-0011

Sampling frequencies F_SYNC0 * n applicable to EL5031-0011