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Analog Input Units Section 5-4
Analog Data + Top/Valley
Detection Timing Flags
(Analog Data + Shot
Status)
This data pattern consists of Analog Data followed by the Top/Valley Detec-
tion Timing Flags and is allocated in the Master using the following data for-
mat (6 bytes/3 words).
Hold Flags (Output) Hold Flags are used with the peak/bottom hold and top/valley hold functions.
The Hold Flags are used to control the hold execution timing from the Master
and are allocated in the Master using the following data format (2 bytes).
Note A delay may occur between when the Master’s power is turned ON until notifi-
cation of the Hold Flag status is sent to the Unit.
The details for each bit are shown in the following table.
5-4-3 Functions and Settings
Setting the Number of
AD Conversion Points
Normally, when using a two-point Input Unit, the values for the two inputs are
converted in sequence. The setting can be changed, however, so that unused
inputs are not converted. By reducing the number of conversion points, the
5 V_STx Top/val-
ley detec-
tion
timing
Valley Detec-
tion Timing Flag
Used with the valley hold func-
tion.
Turns ON when a valley is
detected, and turns OFF after
the one-shot time has lapsed.
6 T_STx Top Detection
Timing Flag
Used with the top hold function.
Turns ON when a top is
detected, and turns OFF after
the one-shot time has lapsed.
7 BWx Off-wire Detection Flag Turns ON when a disconnec-
tion is detected.
Bit Abbrevi-
ation
Name Details
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
+0
+1
Analog Data for Input 0
+2
+3
Analog Data for Input 1
+4
+5
000000V_ST1V_ST0
000000T_ST1T_ST0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
+0 HD1 HD0
+1
Bit Abbreviation Name Details
0HD0Hold Flag for
Input 0
The hold function is performed for Ana-
log Input 0 while this flag is ON. The
hold function stops and the last value is
held when the flag goes OFF.
1HD1Hold Flag for
Input 1
The hold function is performed for Ana-
log Input 1 while this flag is ON. The
hold function stops and the last value is
held when the flag goes OFF.
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