Balluff BTL5-T110 Technische Beschreibung Seite 86

BTL5-T110...
Configuration and Profibus Connection –
Transducer Class 3/4
7 Data (cont.)
7.1.2 Parameters for clock
synchronism
Isochronal parameters are set in
part by the user, in part calculated
by the configuration tool. The
individual parameters are
described briefly in the following:
T : To get the position value as
i
close to real-time as possible,
time T must be set greater than
i
or equal to T . If the value for T
min
is less than T , the parameter
min
configuration is rejected.
T : As the measurement is
dp
time-discrete, i.e. only done at
certain times, and actions also
require a current measured
value at time T , the sum of both
o
measured times T and T
i
be equal to the cycle time T
Formula for 1 Magnet:
Length <= 3050 mm
t = (Nom. stroke + 60 mm) / 2800 m/s + CALC
min
Length > 3050 mm
t = (Nom. stroke + 60 mm) / 2800 m/s * 2
min
Formula for 2 Magnets:
Length <= 3900 mm
t = (Nom. stroke + 60 mm) / 2800 m/s * 2 + CALC
min
Length > 3900 mm
t = (Nom. stroke + 60 mm) / 2800 m/s * 3
min
Formula for 3 Magnets:
t = (Nom. stroke + 60 mm) / 2800 m/s * 2 + CALC
min
Formula for 4 Magnets:
t = (Nom. stroke + 60 mm) / 2800 m/s * 2 + CALC
min
Formula for FMM:
t = (Nom. stroke + 60 mm) / 2800 m/s + 1700 µs + CALC
min
CALC = 1100 µs (1 Magnet)
CALC = 1400 µs (2 Magnets)
CALC = 1800 µs (3 Magnets)
CALC = 2600 µs (4 Magnets)
CALC = 2600 µs (FMM-Mode)
Parameter
Struct len
Struct type
Slot nbr
reserved
Version
T base_dp
T dp
T mapc
T baseIO
i
T I
T o
T dx
must
T pll W
o
.
dp
T pll D
Table 7-3: Isochronous Parameters
The values for CALC apply with purely DPV0 communication. Setting
offsets, DPV1 communikation or other requests to for the BTL may lead
to a temporary increase in the processing time and thus to a temporary
delay in the position output.
Data Type Default
Unsigned8 0x1C
Unsigned8 0x04
Unsigned8 0x00
Unsigned8 0x00
Unsigned8 0x01
Unsigned32 -
Unsigned16 > 2 ms
Unsigned8 -
Unsigned32 -
Unsigned16 >Formula
➥ ➥ ➥ ➥ ➥ Fig. 7-1
Unsigned16 -
Unsigned32 -
Unsigned16 < 100 ms
Unsigned16 -
Remark
Block size
Isochronous Parameter
The entire device
—-
Version
Unit [1/12us}
Unit T base dp
Unit T base dp
Unit [1/12us]
Unit T base IO
Unit T base IO
Set by master
Set by master
Set by master
english
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