Special Functions for Plastic Machines
4–103
IP244
C79000–B8576–C860–02
3.4 Special Function, Measured Value Acquisition
at Channels 13 and 14
3.4.1 Selecting the Special Function
You select the special function by setting the main control byte 1 bit 3. With this bit set, there are
several changes compared with operation without the special function.
%# '!&"! !!"& %& "$ & "#$&"! "& !! "!&$" !
&! '$$!& "!&"$!
3.4.2 Stipulating the ADC Conversion Time
The conversion time of the ADC is fixed at 55 ms (jumper ”D” on jumper base X6/X7 is not
evaluated).
The following limit values apply: Thermocouples (channels 0 ... 13)
Fe-Constantan (L and J) 675 C
NiCr-Ni (K) 900 C
Pt 10%Rh-Pt (S) 1600 C
Pt 13%Rh-Pt (R) 1740 C
Voltage channels 13/14
max. 15 V
3.4.3 Processing Sequence of the Analog Inputs
The order in which the individual channels are processed changes so that a voltage channel always
follows a controller channel.
% #! & " !! % &$"$ % ! ' % #! & "
"!&$"$ % &! %
Channel 13 is normally used. If, however, ”read channel 14 once” is requested (main control
byte 4, bit 3), channel 14 is read once instead of channel 13.
!!
!"
& %
% %
Fig. 3.4.3/1 Processing sequence of the analog inputs
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