Omron CRT1 - 10-2008 Operation Manual page 330

Analog Input Slave Units
Analog Status Flags
The details of each byte are shown in the following table.
Byte Abbreviation
+0 V_STx
+1 T_STx
Note The one-shot time can be changed. For details, refer to the one-shot time set-
tings for the top/valley hold function.
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 (4 bytes = 2 words).
Bit 7 Bit 6
+0 BW0 T_ST0 V_ST0
+1 BW1 T_ST1 V_ST1
+2 BW2 T_ST2 V_ST2
+3 BW3 T_ST3 V_ST3
The details for each bit are shown in the following table.
Bit Abbrevi-
ation
0 LLx
1 Lx
2 PSx
3 Hx
4 HHx
Name
Valley Detection Tim-
ing Flag
Top Detection Timing
Flag
Bit 5 Bit 4 Bit 3
HH0
HH1
HH2
HH3
Name
Compara- Low Low Limit
tor result Alarm Flag
Low Limit Alarm
Flag
Normal Flag
(pass signal)
High Limit
Alarm Flag
High High Limit
Alarm Flag
Section 6-4
Details
Turns ON when a valley is
detected by the valley hold
function and then turns OFF
after the one-shot time has
elapsed.
Turns ON when a top is
detected by the top hold func-
tion and then turns OFF after
the one-shot time has elapsed.
Bit 2 Bit 1 Bit 0
H0 PS0 L0 LL0
H1 PS1 L1 LL1
H2 PS2 L2 LL2
H3 PS3 L3 LL3
Details
Turns ON when the value of data
allocated in Analog Data drops
below the Low Low Limit alarm set-
ting.
Turns ON when the value of data
allocated in Analog Data drops
below the Low Limit alarm setting.
Turns ON when none of the alarms
(High High Limit, High Limit, Low
Low Limit, and Low Limit) have been
output.
Turns ON when the value of data
allocated in Analog Data exceeds
the High Limit alarm setting.
Turns ON when the value of data
allocated in Analog Data exceeds
the High High Limit alarm setting.
Input
0
Input
1
Input
2
Input
3
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