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5 analog signal alarming, 8 clearing the digital output configuration, 1 analog input configuration – Infinite Peripherals SCOM-100 User Manual

Page 18

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SCOM-100, User guide

18

4.4.8 Clearing the digital output configuration

The command clears any output configurations related with multivibrator or time
schedules:

1090,m,n,ID

1090: Command

ID

m:

Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)

n:

Output number (1-4 for SCOM-100 main unit, 1-2 for DI-42 I/O
expansion units)

4.5 Analog signal alarming

4.5.1 Analog input configuration

The SCOM-100 analog inputs can be configured to initiate alarm SMS messages when
preset alarm limit conditions (low & high alarm limits) are met. A user configurable
scale can be defined to associate an analog input signal to physical units. The
configuration command is:

1200,m,n,s,SSL,SSH,SCL,SCH,ALL,ALH,u,d

1200: Command

ID

m:

Module number (0 for SCOM-100 main unit, 1-4 for AI-4 expansion
units)

n:

Input number (1-2 for SCOM-100 main unit, 1-4 for AI-4 expansion units)

s:

Input signal name (Text: 0-15 characters, may include space characters)

SSL:

Raw value reading for scale low (0-4095)

SSH:

Raw value reading for scale high (0-4095)

SCL:

Scale low in physical units (-100,000 to 100,000)

SCH:

Scale high in physical units (-100,000 to 100,000)

ALL:

Alarm low limit in physical units (Number in the range of SCL to SCH
with one optional decimal digit. Example: ALL = 52.3)

ALH:

Alarm high limit in physical units (number in the range of SCL to SCH
with one optional decimal digit. Example: ALH = 121.5)

u:

Physical unit (0-15 characters)

d:

Delay time in seconds (0-65535)


For example let us explain all the different parameter settings to use a 4-20mA, 0-10
bar pressure sensor wired on analog input 2 on the main unit (See section 2.4.2).
The pressure sensor characteristic is shown in the diagram below: