Commissioning
EL5101, EL5101-0010, EL5101-0011
161
Version: 4.2
With a cycle time of 1 ms (= 1,000,000 ns) and an oversampling factor of 20 in the regarded cycle, the
EL5101-0011 supplies a StartTimeNextLatch of 503,330,625,067,077,000dec and 20 measured values
(counter value) of 32 bits each as process data. The time of measurement of the 5
th
supplied position value
is now to be determined, i.e. the Distributed Clocks time at which the 5
th
position value was determined.
The currently delivered set of 20 counter values was started at the time:
503,330,625,067,077,000 – 1,000,000 (cycle time) = 503,330,625,066,077,000 ns.
The time interval between the samples is 1.000.000/20 = 50.000 ns.
The 5
th
position value was thus determined at the time 503,330,625,066,077,000 + ((5 - 1) * 50,000) =
503,330,625,066,027,000 ns
Special oversampling factor and Shift Time for the SYNC0 pulse
Attention
CAUTION! Risk of device damage!
If these settings are changed in the System Manager, no plausibility checks are carried out
on the software side.
Correct function of the terminal with all conceivable setting options cannot be guaranteed.
Setting the counter value – referencing:
Since incremental encoders do not deliver an unambiguous position value after switching on, a homing must
be carried out.
The EL5101-0011 offers the option to set the reference point manually via "Set counter" (index 0x7000:03).
“Set counter” (index 0x7000:03)
• The value to be set as reference value (default: 0) is written in “Set counter value” (index 0x7000:11).
• The function is activated by setting the bit in “Set counter” (index 0x7000:03) to TRUE.
• The value from “Set counter value” (index 0x7000:11) is written in “counter value” (index 0x6000:11).
• The value of the bit in “Set counter done” (index 0x6000:03) is set to TRUE.
• After re-activation of "Set counter" (Index 0x7000:03), the next reference value can be written in
"counter value" (Index 0x6000:11) only if the value of the "Set counter done" bit (index 0x6000:03) is
FALSE.
Open circuit detection
• A separate open circuit detection can be activated for each of the channels A, B and C (index
0x8000:0B, 0x8000:0C, 0x8000:0D).
• The open circuit detection for channels A and B is activated by default.
• A differential voltage of -0.475 V > Vid >+0.475V (typical, subject to change) is detected as an open
circuit.
• If an open circuit is detected, it is indicated as process data "Open circuit = TRUE". The bit in object
0x60n0:07 is set. An open circuit is indicated separately in indices 0xA000:01 (track A), 0xA000:02
(track B) and 0xA000:03 (track C).
• “TxPDO state” also becomes TRUE if an open circuit is detected, since invalid data have to be
assumed.
Furthermore, the EL5101-0011 offers the following cyclic information:
