Emerson SI-Universal User Manual page 96

1x.106
Minimum
Default
Type
Display Format
Coding
Value
0
1
2
3
0: Rising 1st
Freeze events are produced on the rising edge of the freeze trigger source. If the F1 Freeze Flag
(1x.104) is 0 then the first suitable edge produced by the trigger source causes the freeze position
to be stored and the F1 Freeze Flag (1x.104) to be set to 1. No further freeze events are possible
until the F2 Freeze Flag (1x.109) has been cleared by the user.
1: Falling 1st
As for Rising 1st, but the falling edge is used to trigger freeze events.
2: Rising All
Freeze events are produced on the rising edge of the freeze trigger source. If the F2 Freeze Flag
(1x.109) is 0 then the first suitable edge produced by the trigger source causes the freeze position
to be stored and the F2 Freeze Flag (1x.109) to be set to 1. If further suitable edges are produced
by the trigger source the freeze position is updated with the current position.
3: Falling All
As for Rising All, but the falling edge is used to trigger freeze events.
Please refer to Figure 7-3 P1 Freeze System on page 52 for further information.
1x.107
Minimum
Default
Type
Display Format
Coding
Value
0
1
F2 Freeze Position Source (1x.107) define the source position for the F2 freeze system. When a
freeze event occurs, the position from the relevant position feedback interface including the effect
of the marker (see P1 Marker Mode (1x.031) is stored and can be accessed as a 32 bit normalized
value in F2 Normalized Freeze Position (1x.108). The position that is generated from a digital
incremental source is captured in hardware and the normalized freeze position and freeze flag are
updated by the drive within 250 µs (the flag is always updated after the position is updated).
For all other types of source device some time based interpolation is required using the position
96
F2 Freeze Mode
0
0
8 Bit User Save
None
RW, Txt
Text
Rising 1st
Falling 1st
Rising all
Falling all
F2 Freeze Position Source
0
0
8 Bit User Save
None
RW, Txt
Text
P1
P2
Maximum
Units
Update Rate
Decimal Places
Maximum
Units
Update Rate
Decimal Places
SI-Universal Encoder User Guide
3
Background read
0
1
Background read
0
Issue: 2