Omron CRT1 - 10-2009, Operation Manual

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373
Overview of Temperature Input Units
Section 7-2
The following tables show the data format used for allocating data in the Mas-
ter Unit.
Data is allocated as two's complements.
Normal Display (4 Words (8 Bytes))
1/100 Display Mode (8 Words (16 Bytes))
Top/Valley Detection
Timing Flags These flags turn ON for the one-shot time when a top or valley is detected for
the top/valley hold function. These flags are allocated when detecting the time
to read the values held as the top or valley values at the Master Unit. The fol-
lowing data format is used when these flags are allocated in the Master Unit
(1 word (2 bytes)).
Each bit is described in the following table.
Note The one-shot time can be changed. For details, refer to 11-6-4 Top/Valley
Hold .
Temperature Data Status
Flag The Temperature Status Flags include the Comparator Result Flag, the Top/
Valley Detection Timing Flags, and the Disconnected Line Detection Flags.
These flags are allocated for detection and monitoring. The data format used
for each byte when these flags are allocated in the Master Unit is shown
below (2 words (4 bytes)).
15 0
First word + 0CH Temperature Data 1 for Input CH0
First word + 1CH Temperature Data 1 for Input CH1
First word + 2CH Temperature Data 1 for Input CH2
First word + 3CH Temperature Data 1 for Input CH3
15 0
First word + 0CH Temperature Data 1 for Input CH0, Lower Word
First word + 1CH Temperature Data 1 for Input CH0, Upper Word
First word + 2CH Temperature Data 1 for Input CH1, Lower Word
First word + 3CH Temperature Data 1 for Input CH1, Upper Word
First word + 4CH Temperature Data 1 for Input CH2, Lower Word
First word + 5CH Temperature Data 1 for Input CH2, Upper Word
First word + 6CH Temperature Data 1 for Input CH3, Lower Word
First word + 7CH Temperature Data 1 for Input CH3, Upper Word
15 8 7 0
+1 +0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
+0 0 0 0 0 V_ST3 V_ST2 V_ST1 V_ST0 Lower byte
+1 0 0 0 0 T_ST3 T_ST2 T_ST1 T_ST0 Upper byte
Byte Abbreviation Name Description
+0 V_STx Valley Detection
Timing Flag Turns ON when a valley is
detected by the top/valley hold
function and then turns OFF after
the one-shot time has elapsed.
+1 T_STx Top Detection
Timing Flag Turns ON when a top is detected
by the top/valley hold function and
then turns OFF after the one-shot
time has elapsed.