Omron CRT1 - 10-2009, Operation Manual

Page: 398 / 675

374
Overview of Temperature Input Units
Section 7-2
Each bit is described in the following table.
Temperature Data 1 + Top/
Valley Detection Timing
Flags This data pattern consists of Temperature Data 1 followed by the Top/Valley
Detection Timing Flags. It is allocated in the Master Unit using the following
data format.
15 8 7 0
+1 +0
+3 +2
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
+0 BW0 T_ST0 V_ST0 HH0 H0 PS0 L0 LL0 Input
CH0 Lower
byte
+1 BW1 T_ST1 V_ST1 HH1 H1 PS1 L1 LL1 Input
CH1 Upper
byte
+2 BW2 T_ST2 V_ST2 HH2 H2 PS2 L2 LL2 Input
CH2 Lower
byte
+3 BW3 T_ST3 V_ST3 HH3 H3 PS3 L3 LL3 Input
CH3 Upper
byte
Bit Abbrevi-
ation
Name Description
0 LLx Compara-
tor result Low Low Limit
Alarm Flag Turns ON when the value of
data allocated in Temperature
Data 1 drops below the Low
Low Limit alarm setting.
1 Lx Low Limit Alarm
Flag Turns ON when the value of
data allocated in Temperature
Data 1 drops below the Low
Limit alarm setting.
2 PSx Normal Flag
(pass signal) Turns ON when none of the
alarms (High High Limit, High
Limit, Low Low Limit, and Low
Limit) have been output.
3 Hx High Limit
Alarm Flag Turns ON when the value of
data allocated in Temperature
Data 1 exceeds the High Limit
alarm setting.
4 HHx High High Limit
Alarm Flag Turns ON when the value of
data allocated in Temperature
Data 1 exceeds the High High
Limit alarm setting.
5 V_STx Top/Val-
ley Detec-
tion
Timing
Flag Valley Detec-
tion 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.
6 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.
7 BWx Off-wire Detection Flag Turns ON when a disconnection
is detected.