Multiple Range High/Low Limit Alarm Function - Toshiba LF620 B Series Instruction Manual

10.9 Multiple range high/low limit alarm function

The procedure to use multiple range high/low limit alarm is shown below.
Range setting
DO setting (Note 1)
DI setting
High/Low limit
alarm value setting
High High/Low Low limit
alarm value setting
・Set the range in accordance with 8.2.9 Span (range) in the following order.
1. Set the range type to "unidirectional flow, multiple ranges selected by
external signal".
2. Set Range 1 and Range 2 respectively.
・Set digital output 1 and 2 (DO1, DO2) function to multiple range high limit
alarm output and multiple range low limit alarm output respectively in
accordance with 8.2.18 Digital I/O.
Also set the alarm output state to either of normally open or normally close.
・Set digital input (DI) function to RANGE SW in accordance with 8.2.19
Digital I/O.
・Set high limit alarm and low limit alarm to ON and set alarm value to high
and low alarms respectively in accordancewith 8.2.23 Flow Rate High, Low,
High-High and Low-Low limit Alarm Setting.
Set the alarm not to use to OFF.
・Set high-high alarm and low-low alarm to ON and set alarm value to them
respectively in accordance with 8.2.23 Flow Rate High, Low, High-High
and Low-Low limit Alarm Setting.
Set the alarm not to use to OFF.
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