Timing Ssi Compatible Interface - Pepperl+Fuchs VDM70 Series Manual

Distance measurement device VDM70
"IL5" input limit
Q2 - 2
"IL6" input limit
Q analog 2
"IM1" input mode Q1
"IM2" input mode Q2
"INA" input norm
Q analog
"IN1" input norm Q1
"IN2" input norm Q2
"IVL" input visible
laser
"ISB" input stand-by
"ESM" trigger single
measurement
/
Execute sing.
m.
"EPW" write
parameter
page /
execute
parameter
write
Table 6.1
6.1

Timing SSI compatible interface

Clock
Daten SSI
Figure 6.2
T = Duration of clock signal, minimum 2 µSec = 500 kHz, max. 13 µSec = 77 kHz
Tv = Delay time max. 360 ns
Tm = Minimum time between last rising edge and reloading of SSI approx. 24 µSec.
Gn = MSB (here Gray Code)
24bit transmission: G1 = second LSB, G0 = LSB
24+E transmission: G1 = LSB. G0 = Error bit
25bit transmission: G1 second LSB, G0 = LSB
36
Offset ...
+12000+Off-
set bzw. Off-
set ...
48000+Offset
Offset ...
+12000+Off-
set
"0" , "1" , "2"
"0" , "1" , "2"
"0" , "1"
"0" , "1"
"0" , "1"
"0" , "1"
-
-
User commands and their meaning
T
Tv
Gn Gn-1
Timing SSI compatible interface
ACK Setting second switching point of
Q2 in [mm] or [INCH*100]
ACK Proximity switch only:
Setting 100% point of characteris-
tic analog curve
ACK "0" = inactive,
"1"= 1 switching point,
"2" = 2 switching points
ACK "0" = inactive,
"1"= 1 switching point,
"2" = 2 switching points
ACK Proximity switch only
"0"= Q, "1"=Q inverted
ACK "0" = Q, "1"=Q inverted
ACK "0" = Q, "1"=Q inverted
ACK "0"=pilot laser on
"1"=pilot laser off
ACK "0" = operation, "1" = stand-by
<meas. value> Request for measured value with
single measurement output
ACK Parameters are stored
Tm
G1 G0