Omron CRT1 - 10-2009, Operation Manual

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Summary of the Analog Input Slave Units
Section 6-2
5. Click the OK Button and exit the window.
I/O Data
Analog Data 1 Analog Data is used to monitor analog values. One item from "Raw Value",
"Peak Value", "Bottom Value", "Top Value", "Valley Value", and "Rate of
Change" can be selected for allocation. (The default is allocating of "Raw
Value".)
Note The comparator function can be used with regards to the value allocated to
"Analog Data 1".
The data format for allocation to the Master Unit is described below.
The data is allocated in a two's complement form. (4 words (8 bytes))
Top/Valley Detection
Timing Flags These flags turn ON for the one-shot time when detecting the top or valley for
the top/valley hold function.
These flags are used to time reading the values held as the top and valley val-
ues at the Master Unit. The following data format is used when these flags are
allocated in the Master Unit (1 word (2 bytes)).
The meaning for each bit is as described below.
Note The one-shot time can be changed. For details, refer to the one-shot time set-
tings for the top/valley hold function.
Analog Status Flags The Analog Status Flags include allocations for the Comparator Result Flag,
the Top/Valley Detection Timing Flags, and the Disconnected Line Detection
Flags. These flags are used for detection and monitoring.
The data format used for each byte when these flags are allocated in the Mas-
ter Unit is shown below (2 words (4 bytes)).
15 0
First word + 0CH Analog Data 1 for Input CH0
First word + 1CH Analog Data 1 for Input CH1
First word + 2CH Analog Data 1 for Input CH2
First word + 3CH Analog Data 1 for Input CH3
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 Details
+0 V_STx Valley Detection Tim-
ing Flag Becomes 1 (ON) at the timing
when a valley is detected by
the top/valley hold function and
becomes 0 (OFF) after passing
of one-shot time.
+1 T_STx Top Detection Timing
Flag Becomes 1 (ON) at the timing
when a top is detected by the
top/valley hold function and
becomes 0 (OFF) after passing
of one-shot time.