Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 420

Temperature Input Terminals
Generic Status Flags
(Instance 121)
Top/Valley Detection
Timing Flags (Instance
122)
The Generic Status Flags are used to monitor flags that indicate maintenance
information (Network Power Voltage Monitor Flag, Unit Conduction Time Mon-
itor Flag, and Temperature Data Cumulative Counter Flag). The following data
format is used for allocating flags in the Master (1 byte).
Bit 7 Bit 6
CCB 0
The details of each bit are shown in the following table.
Bit Abbrevia-
tion
0 ---
1 ---
2 NPW
3 RHW
4 CCW
5 MRF
6 ---
7 ---
The following format is used when Generic Status Flags are allocated, start-
ing from the rightmost byte of the Master.
Word 15
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. The following data format is used when these flags are allo-
cated in the Master (2 bytes).
Bit 7
+0 0
+1 0
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.
Bit 5 Bit 4
MRF CCW
Name
---
---
Network Power Voltage
Monitor Flag
Unit Conduction Time
Monitor Flag
Temperature Data Cumu-
lative Counter Flag
Unit Error Flag
---
Cold Junction Compen-
sator Off-wire Flag
+0
Bit 6 Bit 5 Bit 4
0 0 0
0 0 0
Name
Valley Detection
Timing Flag
Top Detection
Timing Flag
Section 7-6
Bit 3 Bit 2 Bit 1
RHW NPW 0
Details
Reserved. (Always 0.)
Reserved. (Always 0.)
Turns ON when the Network
power level drops below the set
monitor value.
Turns ON when the Unit ON time
exceeds the set monitor value.
Turns ON when any of the cumu-
lated analog values exceeds the
set monitor value.
Turns ON when analog conver-
sion stops due to a Unit error.
Reserved. (Always 0.)
Turns ON when the cold junction
compensator is broken or
off-wire.
(DRT2-TS04T only)
8 7
Generic Status Flags
Bit 3 Bit 2 Bit 1
V_ST3 V_ST2 V_ST1
T_ST3 T_ST2 T_ST1
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 function and then
turns OFF after the one-shot time
has elapsed.
Bit 0
0
0
Bit 0
V_ST0
T_ST0
399