SCOM-100
Alarming & remote control unit
User guide
Manual version: 2.0, 5/2010
Firmware version: 1.1.5
Disclaimer
While every effort has been made to ensure that the information included in this guide
is accurate and complete, no liability can be accepted for any errors or omissions.
Infinite Ltd reserves the right to change the specifications of the hardware and
software described in this guide at any time without prior notice.
No part of this guide may be reproduced, transmitted, stored in fixed or removable
media or translated into any language in any form without the prior written permission
of Infinite Ltd.
Infinite makes no warranties for damages resulting from device operation, corrupted
or lost data, or any loss caused by malfunction of the hardware or the software.
Copyright © 2006-2010 – Infinite Ltd
All rights reserved.
SCOM-100, User guide 3
Contents
1. Device overview 5
1.1 Connections
1.2 LED indications
2. Wiring 6
2.1 Power supply
2.2 Digital inputs
2.3 Digital outputs
2.4 Analog inputs
2.4.1 Analog input 1
2.4.2 Analog input 2
2.5 I/O expansion power supply
2.6 GSM antenna
3. Getting started 10
3.1 Preparing a SIM card
3.2 Installing the SIM card
3.3 First power up & factory settings
4. Device operation 11
4.1 SMS commands
4.2 Naming the unit
4.3 Configuring a digital input for alarming
4.3.1 Setting alarm message’s texts
4.3.2 Clearing the digital input configuration
4.4 Controlling the digital outputs
4.4.1 Setting a digital output
4.4.2 Resetting a digital output
4.4.3 Configuring a digital output as a closed contact
4.4.4 Pulse digital output
4.4.5 Setting a digital output after a delay
4.4.6 Resetting a digital output after a delay
4.4.7 Digital output time based scheduling
4.4.8 Clearing the digital output configuration
4.5 Analog signal alarming
4.5.1 Analog input configuration
4.5.2 Setting alarm message’s texts for analog inputs
4.5.3 Clearing the analog input configuration
4.6 Special I/O Functions
4.6.1 ON/OFF and PID control
5. User administration 22
5.1 Create a new user
5.2 Change user configuration
5.3 Remove a user
SCOM-100, User guide 4
5.4 Defining specific alarm recipients
5.4.1 Set a DI alarm recipient
5.4.2 Set an AI alarm recipient
5.4.3 Clear DI alarm recipients
5.4.4 Clear AI alarm recipients
6. Device status & mode controls 24
6.1 Setting the device status
6.1.1 RUN (Control) command
6.1.2 Monitor command
6.1.3 Stop command
6.2 Controlling the device status
6.3 Setting the device response
6.3.1 Send response SMS
6.3.2 Response format
6.3.3 Merge concurrent alarms
6.4 Setting up a SMS counter
6.5 Setting date & time
6.6 Setting a GSM PIN
7. Monitoring capabilities 27
7.1 Monitoring commands
7.2.1 Using the HyperTerminal for configuration
7.2.2 Using the WA Manager for configuration
8. Appendix 30
8.1 Command reference
8.1.1 General parameter settings
8.1.2 User configuration
8.1.3 Output control & configuration
8.1.4 Input configuration
8.1.5 I/O Functions
8.1.6 RTC & Time scheduling
8.1.7 Monitoring commands
8.2 Troubleshooting
8.3 Technical specifications
8.4 Status LED indications
8.5 Default parameter values
8.6 Setting an I/O expansion module address
8.6.1 GE-DIO-42 digital I/O expansion
8.6.2 GE-AI-4 analog input expansion
8.7 RS232C connector layout
SCOM-100, User guide 5
1. Device overview
1.1 Parts identification
1: Start up button
2: GSM antenna connector (SMA jack)
3: SIM card holder
4: Serial port RS232 (RJ-42 connector)
5: Power supply connector
6: I/O expansion connector (6 pin modular jack)
7: Analog inputs screw terminals
8: Digital inputs screw terminals
9: Digital outputs screw terminals
1.2 LED indications
1: Power indicator: Turns on after power up.
2: Four LEDs indicating the digital output states.
3: Turns on while sending or receiving an SMS.
4: Turns on if an error occurs during operation.
5: Monitors the device status (RUN/ MONITOR/ STOP).
6. Flashes during device start up. Turns on if the device is ready for operation.
7. Four LEDs indicating the digital input states.
8. Flashes if a connection to the GSM provider is established.
SCOM-100, User guide 6
2. Wiring
SCOM-100 is a simple device, not requiring special technical background for
configuration and operation. However an electrical technician should undertake the
installation of the device.
2.1 Power supply
Power supply requirements are:
• SCOM-100-12: 12VDC +/-15%
• SCOM-100-24: 24VDC +/-15%
A low ripple power supply output is recommended. Output voltage stabilization is not
required.
See section 9.3.1 for details.
2.2. Digital inputs
SCOM-100 has 4 built in digital inputs, which can be expanded by means of 8 GEDIO-42 expansion modules. The digital inputs are wired by means of screw terminals.
The digital inputs can be driven either by switches or transistors (open collector
stages). Transducers with push-pull output are also applicable.
Note: Output voltages higher than +5V or negative voltages (lower than GND) will be
clamped from the comparator input protection zener. The impedance of the input
circuit is, in this case, 4.7K. An external transducer with 24V output must be
capable of driving a current of 5 mA.
2.3 Digital outputs
SCOM-100 has 4 built in digital outputs, which can be expanded by the DIO-42
expansion modules. The digital outputs are wired by means of screw terminals. Each
output has a normally open contact power relay.
SCOM-100, User guide 7
Voltage Current Mode
250VAC 10A AC1
250VAC 1A AC2,3
150VDC 0.5A DC
It is recommended to use external power relays to drive inductive or capacitive loads
demanding more than 0.5A.
2.4 Analog inputs
SCOM-100 has 2 built in analog inputs (AI1, AI2). A1 is designed for voltage input and
A2 for current input.
2.4.1 Analog input 1
Analog input 1 is a voltage input with two wiring options.
Wiring option: A1A
The input voltage range for this wiring option is 0-1VDC. The input resistance is 2K.
The input voltage range is converted internally to a digital raw range of 0-4095.
The circuit displayed on the left side of the page uses a monolithic semiconductor
sensor (AD592) for temperature measurement. This sensor acts as a high impedance
temperature dependent current source of 1µA/K. The nominal current output is 298µA
at 25°C. The voltage drop on the analog input resistor (2K) is 496mV at -25°C and
756mV at 105°C. The SCOM-100 power supply (Vcc) can be used for the sensor’s
excitation.
The circuit displayed on the center uses an external shunt resistor (51 Ω) wired parallel
to the input in order to measure current signals (e.g. 0-20/4-20mA).
SCOM-100, User guide 8
The circuit displayed on the right side of the page uses an external resistor (Rx) to
measure DC voltage (Vx). Rx and Rin (2K) form a voltage divider. The following table
illustrates the applicable resistor Rx values for different DC voltages:
Vx Rx Vin
0..1V 0 0 -1V
0..5V 8K, 1/4W 0 -1V
0..30V 58K, 1/4W 0 -1V
0..60V 118K, 1/4W 0 -1V
0..100V 198K, 1/4W 0 -1V
Note: In case of low voltage measurements, use short and shielded wiring to avoid
50Hz (60Hz) line noise inteference.
Wiring option: A1B
Wiring option A1B is designed for 0-10VDC signal input through an internal 18K & 2K
voltage divider. The input resistance is 20K.
2.4.2 Analog input 2
Analog input 2 is designed as a current input.
It can be used in conjunction with industry standard current loop transducers &
sensors. Input impedance is 50Ω. The 0-20mA input is converted internally to a digital
raw range of 0-4095.
Note: Applying a voltage source to the current input AI2 may damage the internal 50Ω
input resistor and respectively the entire input circuit.
2.5 I/O expansion power supply
SCOM-100 has two ways to provide power supply for the I/O expansion units.
SCOM-100, User guide 9
Bridge Vcc to Vex on the main SCOM-100 unit to power a limited number of I/O
expansion units (up to 4), as shown below. (Power is then internally wired through the
modular I/O expansion connector).
If the number of expansion modules is more than 4, an external power supply source
must be connected to the power connector screw terminals of each expansion module,
as shown below, and the Vcc to Vex on the main SCOM-100 unit must not be bridged.
Note: The Vex pin must not be connected when an external power source is connected
on the expansion modules because the main SCO-100 unit will be damaged.
2.6 GSM antenna
An external GSM antenna should be used for locations with weak signal strength.
SCOM-100 utilizes an SMA plug connector to connect a GSM antenna.
The GSM antenna must be of appropriate frequency to cover the frequency band of
your GSM provider’s network.
SCOM-100, User guide 10
3. Getting started
3.1 Preparing a SIM card
Before installing the SIM card, use your phone to:
1. Clear the PIN code (no PIN needed).
2. Enter your name and phone number in the first place of the phonebook directory of
the SIM card.
Note: You can alternatively power up the unit without a SIM card and set the PIN
number using a terminal program on a PC, or you can set a PIN in later
configuration stages.
3.2 Installing the SIM card
Note: Always remove or install the SIM card, having the unit powered down!
Insert the card faced down into the cardholder.
3.3 First power up & factory settings
Power up the unit and hold the startup button pressed until the ready LED starts
blinking rapidly.
The unit executes the startup procedure setting all parameters to the factory defaults,
reads the SIM card’s phonebook entry, enters the RUN (Control) mode and sends a
HELLO SMS message to the mobile phone number that was found in the SIM
phonebook entry.
LED indication states are:
1. READY LED will switch on indicating the successful reading of the SIM card’s
phonebook entry.
2. STATUS LED will switch on indicating the RUN (Control) mode.
3. NETWORK LED will be blinking to state successful connection to the GSM
provider’s network.
SCOM-100, User guide 11
4. Device operation
4.1 SMS commands
The SCOM-100 unit accepts text SMS commands to configure operational parameters,
control the unit’s operation modes, and control the unit’s outputs. Several commands
can be packed in one SMS message.
An SMS command has the following structure:
XXXX,A..A,..,..,Z..Z
XXXX: Command identification number 0000-9999
A..A, Z..Z: Command parameters
The comma character (‘,’) is used as a separator in the command structure. The
semicolon character (‘;’) is used to separate more than one commands packed in a
single SMS.
4.2 Naming the unit
You can specify a unit name for identification purposes. The unit name will be used in
several device’s SMS transmissions and responses. The command to name the unit is:
0300,My SCOM-100
0300: Command ID
My SCOM-100: Device name
Use your mobile phone to edit an SMS containing the above command. Type in the
characters without any spaces between
SCOM-100’ may contain spaces). Send the SMS to the SCOM-100 mobile phone
number of the SIM. You will receive an SMS with the following response:
COMMAND PROCESSED OK
indicating that the device’s name is configured.
except in text strings (eg. The name ‘My
4.3 Configuring a digital input for alarming
A digital input can be configured to initiate an alarm SMS transmission after a signal
change. The following selections can be made:
1. Give a name to the digital input. This name will be attached to the alarm SMS if the
unit answer mode is verbose.
2. Configure the signal transition desired to initiate the alarm SMS by selecting
between a positive (0 to 1), a negative (1 to 0) or any transition.
3. Specifying a delay time for alarm annunciation. The signal change must persist
during this delay period in order to initiate an alarm SMS.
The DI configuration command structure is:
1100,m,n,s,a,d
1100: Command ID
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: Input number (1-4)
s: Input signal name (Text: 0-15 characters, may include space characters)
SCOM-100, User guide 12
a: Transition selection (0: No alarm, 1: positive 2: negative 3: both
transitions)
d: Delay time in seconds (0-65535)
The following example illustrates how to configure digital input 1 to initiate an alarm
SMS after any signal transition, a delay time of 30 seconds and a signal name
configured to “Door contact”.
The configuration command would be:
1100,0,1,Door contact,3,30
Send an SMS to the SCOM-100 unit with the respective command.
Connect a contact or a loop wire to digital input 1 according to the wiring diagram in
section 2.2. Close the contact/loop and leave it closed for more than 30 seconds. The
S/R SMS LED will blink and you will receive an alarm SMS message and the following
contents:
My SCOM-100
Door contact
POSITIVE ALARM
Now open the input contact/loop for 30 seconds. You will receive an alarm SMS
message with the following contents:
My SCOM-100
Door contact
NEGATIVE ALARM
If you close or open the contact without maintaining a delay time of 30 seconds, you
won’t receive any alarm SMS message.
4.3.1 Setting alarm message texts
You can set up to 128 custom text messages to be announced in an SMS alarm as a
descriptive reason instead of the default causal text (e.g. POSITIVE ALARM).
The command to configure a text message is:
0630,ID,s
0630: Command ID
ID: Message ID (1-128)
s: Message text (0-31 characters, may include space characters)
The command to associate a text message to an output at a signal transition is:
1101,m,n,ID1,ID2
1101: Command ID
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: Input number (1-4)
ID1: ID number 0-128 of the message’s text for the negative transition (1 to 0)
ID2: ID number 0-128 of the message’s text for the positive transition (0 to 1)
Note: ID1/ID2 value 0 indicate the default message.
Let us specify alarm text messages for the previous example. The message for the
positive (0 to 1) transition should be ‘Door is opened’. The respective message for the
negative transition should be ‘Door is closed’.
The commands to configure these text messages are:
SCOM-100, User guide 13
0630,1,Door is opened;
0630,2,Door is closed
Now we have to associate the text messages to the signal transitions of the example.
The respective command for our example is:
1101,0,1,2,1
We can pack all three commands in one SMS message and send them to the SCOM-
100 unit:
0630,1,Door is opened;
0630,2,Door is closed;
1101,0,1,2,1
After sending and receiving an ‘OK’ response, repeat the signal changes by closing the
contact/loop for at least 30 seconds and then open it again.
Closing of the input for at least 30 seconds will issue an alarm SMS with the following
contents:
My SCOM-100
Door contact
Door is opened
Opening the contact/loop for at least 30 seconds will issue the negative transition alarm
message:
My SCOM-100
Door contact
Door is closed
4.3.2 Clearing the digital input configuration
Any digital input configuration settings such as alarm, naming and message associations can be cleared
using the command:
1110,m,n
1110: Command ID
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: Input number (1-4)
4.4 Controlling the digital outputs
4.4.1 Setting a digital output
SCOM-100 digital outputs are internal relay normally open contacts (see section 2.3).
The command to set a digital output is:
1000,m,n
1000: 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)
Let us set output 2 of the main unit. The respective command is:
1000,0,2
Send an SMS with the above respective command to the device’s phone number.
SCOM-100, User guide 14
The output LED 2 will switch on and you will hear the relay contact switch to a closed
state. You will then receive an “OK’ SMS message response.
4.4.2 Resetting a digital output
The command to reset an output is:
1001,m,n
1001: 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)
In our example the respective command to reset the output 2 of the main unit is:
1001,0,2
Send an SMS with the respective command to the device’s phone number.
The output LED will switch off and you will hear the relay contact switch to the initial
open state. You will then receive an “OK’ SMS message response.
4.4.3 Configuring an output as a closed contact
SCOM-100 digital outputs, as mentioned above, are normally open contacts. In some
cases an initial closed contact state is required. In those cases, you can configure the
respective output to be a closed contact in its initial state.
The respective configuration command is:
1071,m,n
1071: 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)
Send the following command to configure output 2 of the main unit as a closed contact:
1071,0,2
The output LED 2 will switch on and you will hear the relay contact switch to a closed
state.
Now repeat the set/reset procedure of the last two examples. You will receive
messages with a reverse behaviour of the output LED and relay contact. E.g. after a
‘SET’ command, the LED goes off and the relay contact switches to the open state and
opposite.
An output configured as a closed contact can be reconfigured to an open contact using
the ‘Clear DO configuration’ command (see 4.4.8) or using the opposite configuration
command.
Configure output as an open contact:
1070,m,n
1071: 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)
SCOM-100, User guide 15
4.4.4 Pulse digital output
A digital output set with a pulse behaves as shown on the time-based diagram below.
This behavior is that of a monostable timer. The command to set an output with a pulse
is:
1010,m,n,s
1010: 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)
s: Pulse duration in seconds (1-79200)
Test the pulse command by sending an SMS:
1010,0,2,25
4.4.5 Setting a digital output after a delay
A command is available to set a digital output with an initial delay time. The digital
output’s switching behaviour is shown on the time-based diagram below.
The command to set an output after an initial delay is:
1020,m,n,h,mn
1020: 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)
h: Delay on duration hours (0-21)
mn: Delay on duration minutes (0-59)
4.4.6 Resetting a digital output after a delay
A command is available to reset a digital output with an initial delay time. The digital
output’s switching behaviour is shown on the time-based diagram below.
SCOM-100, User guide 16
The command to reset an output after a delay is:
1021,m,n,h,mn
1021: 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)
h: Delay off duration hours (0-21)
mn: Delay off duration minutes (0-59)
4.4.7 Digital output time based scheduling
Multivibrator
A multivibrator is a continuous time based switching sequence as shown in the
following diagram:
Although the output’s switching is continuous, commands for temporary setting or
resetting (1000, 1001) are also applicable and accepted by the device. The command
to set a digital output as a multivibrator is:
1040,m,n,mon,moff
1040: 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)
mon: On duration in minutes (1-1320)
moff: Off duration minutes (1-1320)
The ‘Clear DO configuration’ command can be used to remove the multivibrator
configuration from an output (see 4.4.8).
Time schedule program
Time schedule programs relate to absolute daytimes. Up to 80 time schedule programs
can be stored in the SCOM-100 power fail safe memory, 10 programs for each day of a
week (Sunday to Saturday), and 10 programs for an ‘everyday’ schedule. Every
program permits up to 8 on switching sequences. The time based characteristic of a
schedule is shown in the following diagram:
SCOM-100, User guide 17
The command to configure and set up a time schedule is:
1700,ID,d,P1B-P1D,P2B-P2D,…,P8B-P8D
1700: Command ID
ID: Schedule ID
d: Day of the week 1-7 & 0 (1 for Sunday to 7 for Saturday & 0 for
everyday)
P1B to P8B: Switch on time stamps (HH:MM)
P1D to P8D: On duration in minutes
For example the following command defines a daily program with an ID number 1
containing three ON sequences:
1700,1,0,8:00-120,11:30-100;16:45-180
A schedule program can be attached the device’s outputs by using the following
command:
1030,m,n,ID
1030: 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)
ID: Time schedule ID (1-10)
A device output attached on a schedule ID will operate according to the following rules:
1. On each day the specific daily schedule program with the respective ID is followed.
2. If no specific day (e.g. for Tuesday) program with the respective ID exists, the
‘Everyday’ program is followed.
3. If no specific day program and also no ‘Everyday’ program with the respective ID
exist, the output remains off for the whole day.
4. The output is activated at the next
switch on time stamp.
The ‘Clear DO configuration’ command can be used to remove the time schedule
configuration of an output (see 4.4.8).
A special command is available for controlling the total ON time duration in a day
program:
1701,ID,P
1701: Command ID
P: Factor in % (0-100%). The ON duration of each program sequence is
calculated by multiplicating this factor with the initial sequence duration.
Example:
Reducing the total ON duration of program 3 to the half:
1701,3,50
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:
SCOM-100, User guide 19
The 4-20mA input signal is converted by the internal A/D converter in the digital raw
range of 819 to 4095.
The following diagram illustrates the conversion characteristic:
The conversion values are given by the formula:
Raw digital value:=4095 * Ix/20
Ix: Input current value (mA)
According to the formula, a 4mA input is converted to:
Raw digital value=4095*4/20 = 819
This is the value setting for SSL.
A 20mA input is converted to a raw reading of 4095.
This is the value setting for SSH.
SCOM-100 physical scale values are limited to integer values between -100,000 and
100,000. It is reasonable to select the physical scale in the range of 0 to 10,000 mBar
to gain a better resolution.
The configuration command would then be:
1200,0,2,Pressure,819,4095,0,10000,2500,8500,mBar,15
The low alarm limit is set to 2.5 Bar, the high alarm limit to 9.5 Bar. A 15 second delay
is also set so that the input signal must persist in value and exceed alarm limits (low or
high) for 15 seconds. If these clauses are met then an alarm SMS will be initiated.
Note: Alarm annunciation is cancelled if the respective Scale (low or high) and limit
alarm values (low or high) are equal.
4.5.2 Setting alarm message’s texts for analog inputs
A similar command to the one for digital inputs is available to associate low and high
alarm events with respective SMS messages (1-128 messages, see 4.3.1).
The configuration command is:
1201,m,n,ID1,ID2
1201: 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)
ID1: ID number 0-128 of the message’s text for exceeding the low limit
ID2: ID number 0-128 of the message’s text for exceeding the high limit
Note: ID1/ID2 value 0 means no message.
SCOM-100, User guide 20
4.5.3 Clearing the analog input configuration
Any analog input configuration settings such as alarm, naming, messaging and scaling can be cleared
using the command:
1210,m,n
1210: 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)
4.5.4 Setting the analog inputs alarm deadband
A special command is available to configure alarm deadband (hysteresis) for all
analog inputs. Alarm deadband is a small range in the total scale of the input signal
where alarm states remain indifferent, holding on their last value - in order to avoid
frequent SMS transmissions.
The Alarm deadband is given as a percent of the total scale.
1290,d
1290: Command ID
d: Alarm deadband value in % up to 5% of the total scale (0-5% in 0.1
steps). Example: d =2.3%
4.6 Special I/O Functions
4.6.1 ON/OFF and PID control
Up to four ON/OFF or PID control function blocks are available. Each block uses an analog input
for measuring the process value and a digital output for control.
Function block configuration
1250,id,m,n,m1,n1,sp,g,it,dt,ct,h
1250: Command ID.
id: Function block ID (1-4).
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).
m1: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units).
n1: Output number (1-4 for SCOM-100 main unit, 1-2 for DI-42 I/O
expansion units).
sp: Set point value in the range of the analog input scale.
g: ‘Gain’ value (P) between 1 and 100%. The block function depends on
the ‘Gain’ value: A zero value selects the ON/OFF control function. A
non zero value selects the PID function.
it: ‘Integral time’ (I) value between 1-1000 sec. A zero value disables the
integral part (not relevant for ON/OFF control).
dt: ‘Derivative time’ (D) value between 1-200 sec. A zero value disables the
drivative part (not relevant for ON/OFF control)..
ct: ‘Cycle time’ value between 1 and 15 minutes, representing the pulse
width modulation period of the digital output (not relevant for ON/OFF
control).
SCOM-100, User guide 21
h: ‘Hysteresis’ value in [%] of the analog input scale (0-20%) for ON/OFF
control (not relevant for PID control).
Changing the set point value
1255,id,sp
1255: Command ID.
id: Function block ID (1-4).
sp: Set point value in the range of the analog input scale.
Setting the Function block state
The ON/OFF or PID control function block can be enabled or disabled with this SMS
command:
1251,id,s
1251: Command ID.
id: Function block ID (1-4).
s: 1: enable, 0:disable
Controlling the Function block state
A digital input can be configured to control the Enabled/Disabled status of the function
block.
The following command selects the digital input.
1252,id,m,n
1252: Command ID.
id: Function block ID (1-4).
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: DI input number (1-4)
The following command clears the digital input function.
1253,id
1253: Command ID.
id: Function block ID (1-4).
Clearing the Function block configuration
The command erases the function block configuration and frees the function block
instance and the respective I/O.
1260,id
1260: Command ID.
id: Function block ID (1-4).
Note: Analog or digital inputs involved in ON/OFF or PID control function blocks can be
used for alarming, while involved digital outputs are dedicated to control and
cannot be remotely controlled through SMS commands.
SCOM-100, User guide 22
5. User administration
Up to 20 SMS users can be declared in a user list for an SCOM-100 unit. Only
declared users can interact (send, receive SMS) with the unit.
SCOM-100 features three user privileges reflecting different user rights. For each user
the following privilege flag can be configured:
1. User administration. A user has the right for user administration (Create, Delete,
Set privileges) or not.
2. Device configuration. A user has the right to configure the SCOM-100 device or
not.
3. Alarm SMS recipient. A user can be an SMS alarm recipient or not.
5.1 Create a new user
The device accepts the command only if it is issued by users who have the
administration privilege.
0500,id,n,p,c1,c2,c3
0500: Command ID
id: User ID (1-20)
n: User name (0-15 characters)
p: Phone number (3-15 characters)
c1: User administration privilege (0 for ‘No’ 1 for ‘Yes’)
c2: Device configuration privilege (0 for ‘No’ 1 for ‘Yes’)
c3: Alarm SMS recipient (0 for ‘No’ 1 for ‘Yes’)
c4: M2M user: the user is another SCOM device (0 for ‘No’ 1 for ‘Yes’)
5.2 Change user configuration
A user with the user administration privilege can use this command to edit other user
privileges.
0502,id,c1,c2,c3
0502: Command ID
id: User ID (1-20)
c1: User administration privilege (0 for ‘No’ 1 for ‘Yes’)
c2: Device configuration privilege (0 for ‘No’ 1 for ‘Yes’)
c3: Alarm SMS recipient (0 for ‘No’ 1 for ‘Yes’)
c4: M2M user: the user is another SCOM device (0 for ‘No’ 1 for ‘Yes’)
5.3 Delete a user
A user with the user administration privilege can use this command to remove a user
from the user list.
0501,id
0501: Command ID
id: User ID (1-20)
5.4 Defining specific alarm recipients
Special commands are available for defining a subset of the user list as SMS recipients for
each alarm.
SCOM-100, User guide 23
5.4.1 Set a DI alarm recipient
1102,m,n,id
1102: Command ID
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: DI input number (1-4)
id: User ID (1-20)
5.4.2 Set an AI alarm recipient
1202,m,n,id
1202: Command ID
m: Module number (0 for SCOM-100 main unit, 1-4 for AI-4 expansion
units)
n: AI input number (1-2 for SCOM-100 main unit, 1-4 for AI-4 expansion
units)
id: User ID (1-20)
5.4.3 Clear DI alarm recipients
The command removes all recipients for a specific DI alarm.
1109,m,n
1109: Command ID
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: DI input number (1-4)
5.4.4 Clear AI alarm recipients
The command removes all recipients for a specific AI alarm.
1209,m,n
1209: Command ID
m: Module number (0 for SCOM-100 main unit, 1-4 for AI-4 expansion
units)
n: AI input number (1-2 for SCOM-100 main unit, 1-4 for AI-4 expansion
units)
SCOM-100, User guide 24
6. Device status & mode controls
6.1 Setting the device status
A SCOM-100 unit has three operation states:
1. The RUN (Control) state: The unit sends alarm SMS and accepts output control
commands. The Status LED is then on.
2. The MONITOR state: The unit sends alarm SMS. All outputs are reset to their
initial state. Output control commands are executed by storing the output states
internally. The actual output states are restored upon switching to the RUN state.
The Status LED is blinking.
3. The STOP state: The unit does not send SMS and rejects all output control
commands. All outputs are reset to their initial state. The Status LED is then off.
Configuration and monitoring commands are accepted and answered in all operation
modes.
6.1.1 RUN (Control) command
0100
The Status LED switches on and the unit enters the RUN (Control) state.
6.1.2 Monitor command
0110
The Status LED starts blinking and the unit enters the MONITOR state.
6.1.3 STOP command
0000
The Status LED switches off and the unit enters the STOP state.
6.2 Controlling the device status
A digital input can be used to switch between RUN and MONITOR mode for power
saving purposes.
1105,m,n,v
1105: Command ID
m: Module number (0 for SCOM-100 main unit, 1-8 for DI-42 I/O expansion
units)
n: DI input number (1-4)
v: Input state for switching to MONITOR mode (0,1).
The function can be deactivated with the ‘Clear DI configuration command (See 4.3.2).
6.3 Controlling the device response
6.3.1 Send acknowledgement SMS
The device sends a typical acknowledgement response SMS to all configuration
commands. The contained text in these SMS can be ‘COMMAND PROCESSED OK’
or ‘OK’ (according to the active answer mode Verbose or Brief) in case of successful
command execution or All acknowledgement SMS send by the device can be
cancelled using the command:
0621
SCOM-100, User guide 25
Note: In the case of a rejected command, the error response SMS is always being
sent.
The acknowledgement SMS can be restored using the command:
0620
6.3.2 Response format
The device acknowledgement SMS can be in verbose or brief format. The verbose
format is informative text and is recommended for man to machine applications. Brief
format is a briefly coded format for use in machine-to-machine applications. Verbose
acknowledgement can be cancelled using the command:
0611
The verbose acknowledgement can be restored using the command:
0610
6.3.3 Merge concurrent alarms
The device can send a separate SMS for each alarm or merge concurrent alarms in
one SMS. Alarm merging can be applied using by the command:
0660
Alarm unmerging can be applied using the command:
0661
6.4 Setting up an SMS counter
An SMS counter can be activated for counting down available SMS transmissions. A
preset limit can be set for user alarming when the limit is reached.
The counter can be set to a number of remaining SMS messages using command:.
0650,v
0650: Command ID
v: Remaining SMS number (0-4294967295)
Remaining SMS messages limit reach will be acknowledged to users if a limit is set
using command:
0600,l
0600: Command ID
l: Remaining SMS alarm limit (0-4294967295)
Remaining SMS alarm annunciation can be cancelled using the command:
0601
6.5 Setting date and time
The device real time clock (RTC) can be set through the following command:
1600,d,m,y,h,m,s
1600: Command ID
d: Day of the month (1-31)
m: Month of the year (1-12)
y: Year
h: Hour
m: Minutes
s Seconds
SCOM-100, User guide 26
6.6 Setting a GSM PIN
An optional SIM card PIN can be set through the following command:
0783,p
0783: Command ID
p: 4 number characters
SCOM-100, User guide 27
7. Monitoring capabilities
7.1 Monitoring commands
The following command invokes a response about device state and active I/O
information:
5100
A typical response SMS is:
UNIT:My SCOM-100
MODE:MONITOR
Door contact (DI 0,1):OFF
Several commands are available for monitoring the actual device configuration, I/O
status and device status. See 9.1.6 command summary for more information on
monitoring commands.
7.2 Connecting a PC
The SCOM-100 device can be connected to a PC via the device’s serial port and
special serial cable.
7.2.1 Using the Hyperterminal for configuration
Connect the SCOM-100 unit to a PC. Open the HyperTerminal and set up a new
session.
Press OK to create a new connection.
SCOM-100, User guide 28
Select a serial connection, choose the appropriate serial port and press ‘OK’. Select
the following settings for the serial port:
Open the ‘Properties’ menu and press the ‘ASCII Set up’ button.
Check the option ‘Append line feeds to incoming line ends’ and press ‘OK’ to leave the
Properties dialog.
Type in:
at
and press <ENTER>.
SCOM-100, User guide 29
If a connection is established the answer is ‘OK’. If you don’t see your typed
characters, give the following command to enable character echoing:
Ate1
All configuration commands can be passed to the unit from the Windows
HyperTerminal. The command structure is the same to that of the SMS commands,
except the fact that they are embedded in an overall ‘atsms’ command.
Example:
The SMS command:
1100,0,1,Door contact,3,30
for digital input configuration can be given via the terminal as:
atsms=”1100,0,1,Door contact,3,30”
All device responses are routed to the terminal’s screen.
7.2.2 Using the WA Manager for configuration
The WA Manager is a Windows application for convenient configuring and
commissioning the SCOM-100 unit. See the WA Manager manual for more information.
SCOM-100, User guide 30
8. Appendix
8.1 Command reference
8.1.1 General parameter settings
Cmd Description Syntax Comments
0000 Set Unit Mode: Stop cmd
0100 Set Unit Mode: Control cmd
0110 Set Unit Mode: Monitor cmd
0150 Get Last Error Report cmd
0171 Reset Device cmd
0183 Set Factory Defaults cmd,cmd
0200 Clear Error Led cmd
0300 Set Device Name cmd,s s:0-15
0310 Set Device Description cmd,s s:0-60
0600 Set Remaining SMS Alarm Limit cmd,l l:0-4294967295
0601 Cancel Remaining SMS Alarm cmd
0610 Set Verbose Responses cmd
0611 Cancel Verbose Responses cmd
0620 Set acknowledgement SMS cmd
0621 Cancel acknowledgement SMS cmd
0630 Set Alarm Message Text cmd,id,s id:1-128, s:0-31
0650 Set Remaining SMS Counter cmd,v v:0-4294967295
0660 Merge Concurrent Alarms cmd
0661 Unmerge Concurrent Alarms cmd
0783 Set GSM PIN cmd,p p:4
8.1.2 User configuration
Cmd Description Syntax Comments
0500 Create User
0501 Delete User cmd,id id:1-20
0502 Set User
Configuration
1102 Set DI Alarm
Recipient
1202 Set AI Alarm
Recipient
1109 Clear DI Alarm
Recipients
1209 Clear AI Alarm
Recipients
cmd,id,n,p,c1,c2,c3,c4
cmd,id,c1,c2,c3 id:1-20, c1-c3: 0-1
cmd,m,n,id m:0-8, n:1-4, id:1-20
cmd,m,n,id m:0-4, n:1-2 (base) or 1-4 (ext), id:1-20
cmd,m,n m:0-8, n:1-4
cmd,m,n m:0-4, n:1-2 (base) or 1-4 (ext)
Id:1-20, n:0-15, p:3-15, c1-c4: 0-1
(config users, config device, receive alarm
SMS, M2M flag)
(config users, config device, receive alarm)
SCOM-100, User guide 31
8.1.3 Output control & configuration
Cmd Description Syntax Comments
1000 Set DO cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
1001 Reset DO cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
1010 Pulse DO cmd,m,n,s m:0-8, n:1-4 (base) or 1-2 (ext),
s:1-79200 sec
1020 Set DO After Delay cmd,m,n,h,mn m:0-8, n:1-4 (base) or 1-2 (ext),
h:0-21 hours, mn:0-59 minutes
1021 Reset DO After Delay cmd,m,n,h,mn m:0-8, n:1-4 (base) or 1-2 (ext),
h:0-21 hours, mn:0-59 minutes
1030 Attach DO to Time Schedule cmd,m,n,id m:0-8, n:1-4 (base) or 1-2 (ext),
id:1-10
1040 Set DO as Multivibrator cmd,m,n,mon,moff m:0-8, n:1-4 (base) or 1-2 (ext),
mon:1-1320 min, moff:1-1320 min
1050 Set DO Name cmd,m,n,s m:0-8, n:1-4 (base) or 1-2 (ext),
s:0-15
1070 Init DO as Open Contact cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
1071 Init DO as Closed Contact cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
1090 Clear DO Configuration cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
8.1.4 Input configuration
Cmd Description Syntax Comments
1100 Set DI Configuration cmd,m,n,s,a,d m:0-8, n:1-4, s:0-15, a:0-3, d:0-
65535
1101 Set DI Alarm Messages cmd,m,n,id1,id2 m:0-8, n:1-4, id1/id2:0-128
1110 Clear DI Configuration cmd,m,n m:0-8, n:1-4
1200 Set AI Configuration cmd,m,n,s,ssl,ssh,scl,s
ch,all,alh,u,d
1201 Set AI Alarm Messages cmd,m,n,id1,id2 m:0-4, n:1-2 (base) or 1-4 (ext),
1210 Clear AI Configuration cmd,m,n m:0-4, n:1-2 (base) or 1-4 (ext)
1290 Set analog IN deadband Cmd,d D:0-5% of the total scale with 0.1
m:0-4, n:1-2 (base) or 1-4 (ext), s:015, ssl/ssh:0-4095 scl/sch/all/alh:
-100000…100000,
u:0-15, d:0-65535
id1/id2:0-128
steps
8.1.5 I/O Functions
Cmd Description Syntax Comments
1250 Set ON/OFF - PID Control
Configuration
1251 Set ON/OFF - PID Control
state
1252 Set PID Control DI cmd,id,m,n id:1-4, m:0-8, n:1-4
cmd,id,m,n,m1,n1,sp,g,it
,dt,ct,h
cmd,id,s id:1-4, s:0-1
id:1-4, m,n:AI, m1,n1:DO,
sp:-100000-100000, g:0.0-100.0,
it:0-1000 sec,
dt:0-200 sec,
ct:1-15 min,
h:0.0-20.0 %
SCOM-100, User guide 32
Cmd Description Syntax Comments
1253 Clear PID Control DI cmd,id id:1-4
1255 Set PID Control Set Point cmd,id,sp id:1-4, sp:-100000-100000
1260 Clear PID Control
Configuration
1105 Set DI for device Status
control
cmd,id id:1-4
cmd,m,n,v m:0-8, n:1-4, v:0-1
8.1.6 RTC & Time scheduling
Cmd Description Syntax Comments
1600 Set RTC Time cmd,d,m,y,h,m,s d: Day of month (1-31), m: Month
of year (1-12), y:Year, h:Hour,
m:Minutes, s:Seconds
1700 Set Time Schedule Day cmd,id,d,p1b-p1d,p2b-
p2d,…,
p8b-p8d
1701 Set Time Schedule
Duration Percent
1710 Clear Time Schedule cmd,id id:1-10
cmd,id,p id:1-10, p:0-100
id:1-10, d:1-7 (1:Sun, 2:Mon, etc)
8.1.7 Monitoring commands
Cmd Description Syntax Comments
2000 Get Device Status cmd
2006 Get Device Software Version cmd
2300 Get Device Name cmd
2310 Get Device Description cmd
2500 Get User Info cmd
2600 Get Remaining SMS Alarm Limit cmd
2601 Get Remaining SMS Alarm Status cmd
2610 Get Verbose Responses cmd
2620 Get Acknowledge Status cmd
2630 Get Alarm Message Text cmd,id id:1-128
2650 Get Remaining SMS Counter cmd
2660 Get Alarm Merge Status cmd
2710 Get Available Alarm Message ID cmd
3000 Read DO cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
3050 Get DO settings cmd,m,n m:0-8, n:1-4 (base) or 1-2 (ext)
3100 Read DI cmd,m,n m:0-8, n:1-4
3110 Get DI Settings cmd,m,n m:0-8, n:1-4
3200 Read AI cmd,m,n m:0-4,
n:1-2 (base)
or 1-4 (ext)
3210 Get AI Settings cmd,m,n m:0-4, n:1-2 (base) or 1-4 (ext)
3250 Get ON/OFF - PID Settings cmd,id id:1-4
SCOM-100, User guide 33
Cmd Description Syntax Comments
3600 Get RTC Time cmd
3700 Get Time Schedule cmd,id id:1-10
5000 Get HELLO cmd
5100 Get Current IO State
(AI/DI/AO/DO)
cmd
8.2 Troubleshooting
The ready LED
goes off after the
start up sequence.
The unit does not
respond to SMS at
all.
The unit does not
respond to
configuration SMS
commands.
The unit does not
execute my digital
output control
commands.
The unit does not
send an alarm SMS
after a digital input
state changes.
The analog value
readings through
the monitoring
command seem not
to be correct.
Case 1: Error LED is off
You started the unit for the first time and the SIM card does not contain a user
name and phone number in the phone book directory. See chapter 3.1.
Case 2: Error LED is on
An error occurred during start up.
The unit does not register to the GSM provider network. Check if the
‘NETWORK’ LED is blinking.
Connect a proper GSM antenna to the unit (See 2.6)
The ‘Response SMS’ parameter is probably off. Set the parameter to on
state.
Read 6.2.1
Check the status LED.
The unit is probably in STOP or MONITOR status. Set the unit status to RUN.
See chapter 6.1.
Read the SMS response to your command.
The device is in STOP mode.
The respective input is not activated for alarming. Activate the input by
sending the proper configuration command (See 4.3).
Check sensor cabling for the corresponding channel (see chapter 2.4)
Set the correct analog channel measurement parameters (see 4.5.1).
Alarm SMS of an
analog input come
too frequently.
Set a higher alarm delay or a deadband value for the analog inputs (see
4.5.4)
SCOM-100, User guide 34
8.3 Technical specifications
8.3.1 Main unit
Protection IP20
Temperature range -10°C, +70°C, operating
Dimensions 106 x 90 x 58 mm
Weight 0.3 kg
LED indications 4 digital input LED, 4 digital output LED
6 control LED
Mounting EN 60 715 TH35 DIN rails
Supply voltage SCOM-100-MU-12 : 12VDC+/-10%
SCOM-100-MU-24 : 24VDC+/-10%
Supply current rated 250 mA max, (2 A burst)
Analog inputs 2, resolution 10 bit
Digital inputs 4, pull, GND to Vcc
Digital outputs 4, relay, 250V, 10A AC1
Baud rate: 2400 to 115200 bps Serial port (COM2)
Protocols: Hayes AT, Custom AT (atsms)
Interfaces
GSM MODEM Quad Band (850/900/1800/1900MHz)
SMS GSM Text Format
SIM Card : SIM card holder
RS232C: RJ-45 connector
I/O expansion: 6 pin modular connector
Microphone: 2 pin array connector
Power supply & I/O: screw terminals
8.3.2 GE-DIO-42 Digital I/O Expansion module
Protection IP20
Temperature range -10°C, +70°C, operating
Dimensions 53 x 90 x 58 mm
Mounting EN 60 715 TH35 DIN rails
Supply voltage GE-DIO-42-12 : 12VDC+/-10%
GE-DIO-42-24 : 24VDC+/-10%
Supply current 80 mA max
Digital inputs 4, pull, GND to Vcc
Digital outputs 2, relay, 250V, 10A AC1
Interfaces I/O expansion: 2 x 6 pin modular connector
SCOM-100, User guide 35
8.3.3 GE-AI-4 Analog Input Expansion module
Protection IP20
Temperature range -10°C, +70°C, operating
Dimensions 53 x 90 x 58 mm
Mounting EN 60 715 TH35 DIN rails
Supply voltage 12-24 VDC+/-10%
Supply current 20 mA max
Analog inputs 4, 12 bit, 0-1V, 0-20 mA
Interfaces I/O expansion: 2 x 6 pin modular connector
SCOM-100, User guide 36
8.4 Status LED indications
8.4.1 Main unit
LED Indication
POWER Presence of power supply voltage
NETWORK Blinking upon successful registration the GSM provider’s network
S/R SMS Turns on during SMS receive or transmit
ERROR
STATUS ON: RUN (Control) state
READY Blinking slowly: The unit starts up after power up (approx. 1 minute)
• Turns on after start up:
SIM card error
Modem error
Missing I/O expansion module
Excessive EM noise or hardware error
• Turns on during operation
Modem error
Excessive EM noise or hardware error
Blink: MONITOR state
OFF: STOP state
Blinking fast: The unit starts after holding the start up button pressed during power
up: Initialization process (approx. 1 minute)
On: Unit start up completed OK
Off with ERROR LED off: No user administrator found in SIM
Off with ERROR LED on: See ERROR LED
8.4.2 GE-DIO-42 Digital I/O expansion
LED Indication
POWER Presence of power supply voltage
RST Digital output reset during STOP or MONITOR status
8.4.3 GE-AI4 Analog Input expansion
LED Indication
POWER Presence of power supply voltage
RST Digital output reset during STOP or MONITOR status
AI 1-4 Low, High Alarm indications
SCOM-100, User guide 37
8.5 Default parameter values (Factory settings)
Parameter Value
Device Name SCOM-100
Device description REMOTE CONTROL UNIT
Response format Verbose
Send response SMS Yes
SMS counting Disabled
Merge concurrent
alarms
GSM pin None
Language English
DI alarming Disabled
AI alarming Disabled
DO start up state Open contact
User list Empty
Time schedule list Empty
Alarm message list Empty
Yes
8.6 Setting an I/O expansion module address
8.6.1 GE-DIO-42 digital I/O expansion
Module number 0 is reserved for the main unit.
SCOM-100, User guide 38
Module
address
selection
The module number (m, see sections 4.3 & 4.4) of an expansion module is determined
by the DIP switch settings on the rear side of the module. The settings can be derived
from the following table:
Dip switch settings Module number (m)
1
2
3
4
5
6
7
8
SCOM-100, User guide 39
8.6.2 GE-AI-4 analog input expansion
Module address
Input range selection for AI 1x
OFF: 0-1 V
ON: 0-20/4-20 mA
The input range of each analog input can be selected between 0-1V (DSW OFF) and
0-20mA (DSW ON) by means of the quad dip switch on the rear panel.
An internal current source is available (EX+, EX- terminals) for exciting PT100 sensors
with 2 mA. The module address settings can be derived from the following table (Dip
switch number 1 is not used):
Dip switch settings Module number (m)
1
2
3
4
SCOM-100, User guide 40
The following table contains the scale and Sensor low/high values for the common
ranges:
Sensor Scale Sensor low Sensor high Gain
- 0-1V 0 4095 4.095
- 0-20mA 0 4095 4.095
- 4-20mA 819 4095 4.095
PT100 -50…595°C 661 2694 4.095
8.7 RS232C connector layout
PIN Type Acronym Signal
1 Out DCD Data Carrier Detect
2 Out DSR Data Set Ready
3 Out RXD Receive Data
4 In RTS Request To Send
5 In TXD Transmit Data
6 Out CTS Clear To Send
7 In DTR Data Terminal Ready
8 POWER GND Signal Ground
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