Seneca RTU-LP User Manual

Page 1

SENECA s.r.l.

(Other)

This document is property of SENECA srl. Duplication and reproduction of its are forbidden
(though partial), if not authorized. Contents of present documentation refers to products and
technologies described in it. Though we strive for reach perfection continually, all technical data
contained in this document may be modified or added due to technical and commercial needs;

it’s impossible eliminate mismatches and discordances completely. Contents of present
documentation is anyhow subjected to periodical revision. If you have any questions don’t

hesitate to contact our structure or to write us to e-mail addresses as above mentioned.

USER MANUAL

RTU-LP

Ultra Low Power RTU and Datalogger, with quad band GSM/GPRS modem and

embedded I/O

Via Austria 26, PADOVA – ITALY
Tel. [phone] Fax. [phone]
Web site: www.seneca.it
Customer service: [e-mail] (IT), [e-mail]

(Other)

Commercial information: [e-mail] (IT), [e-mail]

MI004690_101_EN

USER MANUAL – RTU-LP-ST

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Date

Version

Changes

03/04/2017

1.00

First Revision

12/06/2017

1.01

Added info on Alarms.

Modified Chapter “Power control for external sensors”

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Table of contents

SENECA RTU-LP ................................................................................................................ 6

PRELIMINARY INFORMATION .......................................................................................... 6

1. CHARACTERISTICS .................................................................................................... 8

1.1. RTU-LP characteristics .................................................................................................................................... 8

1.2. Digital Inputs .................................................................................................................................................. 9

1.3. Digital outputs ............................................................................................................................................... 9

1.4. Analog Inputs ................................................................................................................................................. 9

1.5. Communication Port .....................................................................................................................................10

1.6. Storage units .................................................................................................................................................10

1.7. Power supply ................................................................................................................................................10

1.8. Regulations ...................................................................................................................................................11

1.9. Default Case specifications ............................................................................................................................11

2. CONNECTIONS .......................................................................................................... 11

2.1. Power supply connections ............................................................................................................................11

2.2. Analog input connections ..............................................................................................................................12

2.3. Auxiliary voltage connections .......................................................................................................................12

2.4. Serial communication RS232 ports connections ............................................................................................13

2.5. Digital outputs connections ..........................................................................................................................13

2.6. Power control for external sensors ...............................................................................................................14

2.7. Digital inputs connections .............................................................................................................................14

3. SIGNAL LEDS ............................................................................................................ 15

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3.1. GSM led ........................................................................................................................................................15

4. DEVICE OVERVIEW ................................................................................................... 16

5. WAKE UP WINDOW ................................................................................................... 17

5.1. WAKE UP REPORT SMS .................................................................................................................................17

6. REAL TIME EVENTS .................................................................................................. 19

6.1. REAL TIME EVENTS SMS ................................................................................................................................19

6.2. REAL TIME EVENTS FTP FILE ..........................................................................................................................22

7. ANALOG INPUTS LOG FTP FILE (FILE0) ................................................................ 24

7.1. Analog Inputs log data buffering ...................................................................................................................25

8. EVENTS LOG FTP FILE (FILE1) ................................................................................ 25

8.1. Events log data buffering ..............................................................................................................................28

9. MODBUS RTU PROTOCOL ....................................................................................... 28

9.1. MODBUS RTU ADDRESSES TABLE ..................................................................................................................29

10. SUPPORTED SMS COMMANDS ........................................................................... 30

10.1. Setting the Telephone SMS Character Alphabet ............................................................................................31

10.2. CM - Change Wake-Up Window Parameters .................................................................................................31

10.3. CS - Change Analog Threshold Parameters ....................................................................................................31

10.4. CT - Change Address book Telephone numbers .............................................................................................32

10.5. AZ – Action Command ...................................................................................................................................32

10.6. AZ – Synchronize DATE/HOUR ......................................................................................................................33

10.7. CL - Change Events Label ...............................................................................................................................34

10.8. ES - SMS 0 EXTERNAL EVENT .........................................................................................................................36

11. SOFTWARE CONFIGURATION: EASY RTU-LP ................................................... 36

12. FIRMWARE UPDATE.............................................................................................. 37

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13. ENERGY ANALYSIS ............................................................................................... 37

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Seneca RTU-LP

PRELIMINARY INFORMATION

CAUTION!

Contact your telephone provider for information on GSM and GPRS service costs. It is best to
quantify log and SMS costs before setting up and installing RTU-LP.

The use of RTU-LP in data roaming (for example, abroad with an Italian SIM card) may generate
unexpected costs. Contact your telephone provider for further information.

IN NO CASE MAY SENECA OR ITS SUPPLIERS BE HELD LIABLE FOR ANY INCOMING DATA OR
PROFIT LOSSES DUE TO INDIRECT, CONSEQUENTIAL OR INCIDENTAL CAUSES (INCLUDING
NEGLIGENCE) CONNECTED WITH THE USE OR INABILITY TO USE RTU-LP, EVEN IF SENECA WAS
INFORMED OF THE POTENTIAL OF THESE DAMAGES.

SENECA, ITS SUBSIDIARIES OR AFFILIATES OR GROUP PARTNERS OR DISTRIBUTORS AND SENECA
DEALERS DO NOT GUARANTEE THAT THE FUNCTIONS FAITHFULLY MEET THE EXPECTATIONS AND
THAT LP-RTU, THEIR FIRMWARE AND SOFTWARE ARE FREE OF ERRORS OR FUNCTION
UNINTERRUPTEDLY.

SENECA HAS TAKEN THE UTMOST CARE AND CAUTION IN DRAFTING THIS MANUAL. HOWEVER,
IT MAY CONTAIN ERRORS OR OMISSIONS. SENECA SRL RESERVES THE RIGHT TO MODIFY
AND/OR VARY PARTS OF THIS MANUAL TO CORRECT ERRORS OR TO ADJUST TO PRODUCT
FEATURE CHANGES WITHOUT ANY PRIOR NOTICE.

CAUTION!

-Contact your telephone service provider for GSM and GPRS service costs especially when using
RTU-LP with a sim issued by a country other than the one in which it is used (international
roaming).

-It is best to estimate telephone costs before setting up LP-RTU.

-The cost of each SMS is set by the telephone service provider.

-Internet send/receive costs can be tied to Kbytes sent/received, a monthly ceiling included in a
package or internet connection time. Contact your telephone service provider for further
information.

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-For internet connections whose costs is associated with connection time, please remember that
communications are active for an amount of time that depends on the number of log rows to be
sent. Typically, a 2 Kbyte data log takes about 10-15 seconds (in GPRS mode) to be sent in
addition to the time necessary to establish the connection (from 5 to 30 seconds) and the time
due to any server login attempts.

-Check the data quantity sent via internet and SMS before using RTU-LP.

Please remember that mobile phone service providers also consider the entire communication
that permits file transmission (and thus data transmission overhead, the number of connection
attempts, etc.) and not just the dimensions as data traffic in each transaction.

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1. CHARACTERISTICS

1.1. RTU-LP characteristics

 Supply voltage 8..30 Vdc
 Digital Inputs isolation 500 Vdc
 MODEM:

GSM/GPRS quad-band 850/900/1800/1900 MHz
GPRS multi slot class 10
GPRS max. 86 kbps (DL)
Coding scheme CS-1, CS-2, CS-3, CS-4

 Up to 3 Years operation life with the standard 13000 mA/h @ 10,8V Battery (*)
 Power Supply for external loop powered sensors (max 100 mA)
 NR 4 digital inputs
 NR 2 15-bit signed voltage/current programmable analog inputs
 NR 2 relay digital outputs
 NR 1 RS232 port
 NR4 32 bits totalizers (max 1 Hz)
 Data transmission on event and/or on demand (to SMS and/or to FTP server)
 Datalogger internal Flash Memory: 2Mbytes
 Max Analog Log speed: 30 seconds
 Max Digital Log speed: 1 second
 GSM status LED
 Protocol on RS232: Modbus RTU Slave
 32 bits ARM processor
 Firmware update via RS232

(*) = With 1 SMS transmission for day, ALL Inputs OFF, No Aux Power Output, NO RS232
communication

9

Channels number

4

Rated Voltage

7 Vdc

Rated Current

4 mA

Maximum acquisition speed (frequency)

1 Hz

Isolation from other circuits

500 V

Channels number

2

Output type

Bistable Relay (Reset and Set)

Maximum Voltage

30 Vdc

Maximum Current

1 A (resistive load)

Channels number

2

Input type

Current / Voltage configurable

Voltage input

±2V, ±20V, ±50V accuracy 0,1% FS

Current input

±20 mA accuracy 0,1% FS

Resolution

15 bit signed

Maximum Acquisition Speed

30 seconds

1.2. Digital Inputs

1.3. Digital outputs

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1.4. Analog Inputs

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RS232

DB9 PORT

Protocol

Modbus RTU Slave

Internal Flash

2 Mbytes for datalogger
Internal EEprom

64 Kbytes for configuration
Voltage

8...30 Vdc

Average Power consumption

3.7 mW Average (*)

(*)

Without GSM/GPRS/RS232 transmission

ALL inputs OFF

No Aux Power Output

Standard Battery pack duration

Up to 3 Years (*)

(*)

Standard Lithium-thionyl Chloride 13000 mAh

@ 10.8V

GSM ON for 1 SMS/day

ALL inputs OFF

No Aux Power Output

1.5. Communication Port

1.6. Storage units

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1.7. Power supply

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No RS232 transmission

EN61000-6-4/2002-10

Electromagnetic emission, industrial
environment.

EN61000-6-2/2006-10

Electromagnetic immunity, industrial
environment.

EN 301 511

Harmonized standard for mobile stations in the
GSM

900 and 1800 bands.

EN 301 489-1

ElectroMagnetic Compatibility standard for
radio equipment and services.

EN 301 489-7

Specific (EMC) conditions for mobile radio
equipment

(GSM 900 and 1800).

EN 60950

Safety of information Technology Equipment.

Case Dimensions

263 x 143 x 89 mm

(Without battery pack)

Protection rating

IP40

(without optional external case)

1.8. Regulations

USER MANUAL – RTU-LP-ST

1.9. Default Case specifications

2. CONNECTIONS

2.1. Power supply connections

You can supply only DC power from the battery pack, take care the "+" and "-" polarity:

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2.2. Analog input connections

Voltage and current connections can be connected like in picture:

2.3. Auxiliary voltage connections

The device can provide up to 100mA (protected) to an external sensor connected to terminals (+) and (-).

The voltage is the same of the power supply.

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2.4. Serial communication RS232 ports connections

The RS232 PORT is in standard DB9 format:

PIN 5 = GND

PIN 3 = TX

PIN 2 = RX

2.5. Digital outputs connections

The output relay is connected between terminals like in picture:

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The picture shows the DO1 and DO2 in Reset State (default).

2.6. Power control for external sensors

The RTU can switch on up to 2 sensors before read a value from the analog inputs.

It’s possible to define a delay between power ON of an external sensor and the analog acquisition (for the

external sensor wake-up time).

Seneca recommends to use an external battery (rechargeable) for power up external sensors, the power is
connected to the sensor 1 through the DO1 and to the sensor2 through DO2. There is no need to command
the DO because the firmware can power up autonomously the sensors before reading.

2.7. Digital inputs connections

The digital inputs can be connected like below:

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GSM LED

MEANING

OFF

GSM MODEM OFF

(RTU NOT POWERED
OR IN SLEEP STATE)

FAST FLASHING

GSM NETWORK
SEARCHING

SLOW FLASHING

GSM NETWORK
CONNECTED

A 32 bits counters is available for each digital input.

The maximum acquisition speed is 1 Hz.

Digital Inputs have a 500V galvanic isolation between others circuits.

3. SIGNAL LEDS

3.1. GSM led

The GSM status led has the following meanings:

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4. DEVICE OVERVIEW

The RTU-LP-ST is an ultra low power device, the RTU is always sleeping (with the modem OFF) but when an
event is registered the RTU can Wake-up and send data.

It’s also possible to configure the device to send data at a time interval or wake up the board at fixed time
leaving the modem ON for minutes (for receiving commands).

RTU-LP-ST device can send the following type of data:

1) SMS with a Wake up Report

2) SMS with a Real Time Event

3) FTP file with a Real Time Event

4) FTP log file with the analog inputs (File 0)

5) FTP log file with events (File 1)

RTU-LP-ST device can receive the following type of data:

1) SMS with a command

2) Configuration through the RS232 port

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5. WAKE UP WINDOW

When the RTU is in sleep mode the SMS cannot be reached because the modem is switched off for energy
saving purpose. For sending command SMS to the RTU it’s possible to configure a wake-up window where
the RTU can switch ON the modem and read/execute the command SMS.

When the RTU will wake up can also send a SMS with a Wake up Report.

5.1. WAKE UP REPORT SMS

When a wake up window is set it’s also possible to send from the RTU a wake up report SMS of this type:

RP D>abcd00ef 1> ±gggggg 2> ±hhhhh T: dddddddddd eeeeeeeeee ffffffffff gggggggggg BAT:xx.xV
TEMP:xx.xC CSQ Med,Max,Min / ddmmyyhhmm:RTUCODE

Where:

D> digital values

a=in1 value

b=in2 value

c= in3 value

d= in4 value

e=Out1 value

f= Out2 value

1> AIN1 value

gggggg= AIN1 value in % from 0 (0%) to 10000 (100.00%)

2> AIN2 value

Hhhhhh = AIN2 value in % from 0 (0%) to 10000 (100.00%)

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T: totalizers values:

dddddddddd = Totalizer 1 value

eeeeeeeeeee = Totalizer 2 value

ffffffffff = Totalizer 3 value

gggggggggg= Totalizer 4 value

BAT: Battery Voltage

xx.xV battery Voltage measured with modem in ON state

TEMP: Temperature

xx.xC Temperature in °C

CSQ: GSM Field

Medium Filed, maximum Field, minimum Field

Field level: 0=NO SIGNAL, 1=LOW, 2=MED, 3=HIGH

ddmmyyhhmm:

day month year hours minutes at send time

RTUCODE:

RTU numeric code

For example:

RP D> 11110010 1> +1797 2> -2500 T: 0 3354 1144 0 BAT:10.6V TEMP:22.4C CSQ 1,1,1 / 0405171555:0001

In1=In2=in3=in4 = High

Out1 = Set

Out2 = Reset

Analog 1 = 17.97%

Analog 2 = -25.00%

Totalizer1 = 0

Totalizer2 = 3354

Totalizer3 = 1144

Totalizer4 = 0

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EVENT NUMBER

DESCRIPTION

00

DIN1 : Switched to logic level 0

01

DIN2 : Switched to logic level 0

02

DIN3 : Switched to logic level 0

Battery Voltage = 10.6V

Temperature = 22.4°C

GSM Field Minimum Value =1

GSM Field Medium Value =1

GSM Field Maximum Value =1

Send Timestamp = 04 /May /2017 at 15:55

6. REAL TIME EVENTS

Real Time events can be configured for to be sent immediately afterwards the event, or to be
logged in a “FILE1” file.

When a real time event is configured to be sent immediately, it’s possible to use a SMS and/or a
FTP file.

Caution!

The RTU will send real time events only when there is a change state.

6.1. REAL TIME EVENTS SMS

When an event is registered in RTU will switch ON the modem and can immediately send a SMS.

The SMS it’s of this type:

EV xx EVENT_LABEL D>abcd00ef 1> ±gggggg 2> ±hhhhh T: dddddddddd eeeeeeeeee ffffffffff gggggggggg
BAT:yy.yV TEMP:xx.xC CSQ Med,Max,Min / ddmmyyhhmm:RTUCODE

Where:

xx is the event number (see table)

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03

DIN4 : Switched to logic level 0

04

DIN1 : Switched to logic level 1

05

DIN2 : Switched to logic level 1

06

DIN3 : Switched to logic level 1

07

DIN4 : Switched to logic level 1

08

AIN1 < MIN

09

AIN2 < MIN

10

AIN1 > MAX

11

AIN2 > MAX

12

TOT1 > Threshold 1

13

TOT2 > Threshold 1

14

TOT3 > Threshold 1

15

TOT4 > Threshold 1

16

TOT1 > Threshold 2

17

TOT2 > Threshold 2

18

TOT3 > Threshold 2

19

TOT4 > Threshold 2

20

TOT1 Reset/Overflow (0000)

21

TOT2 Reset/Overflow (0000)

22

TOT3 Reset/Overflow (0000)

23

TOT4 Reset/Overflow (0000)

24

SMS 0 (event SMS0)

26

Timer Seconds (count of seconds)

29

Timer Day

30

RTU LOW BATTERY

31

RTU RESET

EVENT_LABEL is the event text that is configured with Easy LP-RTU or SMS

D> digital values

21

a=in1 value

b=in2 value

c= in3 value

d= in4 value

e=Out1 value

f= Out2 value

1> AIN1 value

gggggg= AIN1 value in % from 0 (0%) to 10000 (100.00%)

2> AIN2 value

Hhhhhh = AIN2 value in % from 0 (0%) to 10000 (100.00%)

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T: totalizers values:

dddddddddd = Totalizer 1 value

eeeeeeeeeee = Totalizer 2 value

ffffffffff = Totalizer 3 value

gggggggggg= Totalizer 4 value

BAT: Battery Voltage

yy.yV battery Voltage measured with modem in ON state

TEMP: Temperature

xx.xC Temperature in °C

CSQ: GSM Field

Medium Filed, maximum Field, Minimum Field

Field level: 0=NO SIGNAL, 1=LOW, 2=MED, 3=HIGH

ddmmyyhhmm:

day month year hours minutes at send time

RTUCODE:

RTU numeric code

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For example:

EV 31 REBOOT D> 11110010 1> +1797 2> -2500 T: 0 3354 1144 0 BAT:10.6V TEMP:22.4C CSQ 1,1,1 /
0405171555:0001

This means:

Event 31 = RTU RESET

Text Label for Event 31 = “REBOOT”

In1=In2=in3=in4 = High

Out1 = Set

Out2 = Reset

Analog 1 = 17.97%

Analog 2 = -25.00%

Totalizer1 = 0

Totalizer2 = 3354

Totalizer3 = 1144

Totalizer4 = 0

Battery Voltage = 10.6V

Temperature = 22.4°C

GSM Field Minimum Value =1

GSM Field Medium Value =1

GSM Field Maximum Value =1

Send Timestamp = 04 /May /2017 at 15:55

6.2. REAL TIME EVENTS FTP FILE

The FTP file name is :

RTUNAMERTUCODE_YYYY-MM-DD_HH-MM_KKKK.csv

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Where:

RTUNAME: is the RTU Name configured with Easy RTU-LP Software

RTUCODE: is the numerical RTU code configured with Easy RTU-LP Software

YYYY-MM-DD_HH-MM: it’s the date/hour of the event

KKKK: is a progressive alphanumerical code

A file name example is:

MRTU10001_2017-05-08_11-49_042B.csv

The FTP file content is the same of the SMS in text format:

For example:

EV 31 REBOOT D> 11110010 1> +1797 2> -2500 T: 0 3354 1144 0 BAT:10.6V TEMP:22.4C CSQ 1,1,1 /
0405171555:0001

This means:

Event 31 = RTU RESET

Text Label for Event 31 = “REBOOT”

In1=In2=in3=in4 = High

Out1 = Set

Out2 = Reset

Analog 1 = 17.97%

Analog 2 = -25.00%

Totalizer1 = 0

Totalizer2 = 3354

Totalizer3 = 1144

Totalizer4 = 0

Battery Voltage = 10.6V

Temperature = 22.4°C

GSM Field Minimum Value =1

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GSM Field Medium Value =1

GSM Field Maximum Value =1

Send Timestamp = 04 /May /2017 at 15:55

7. ANALOG INPUTS LOG FTP FILE (FILE0)

The RTU can be configured for log the two Analog inputs with a minimum Log time of 30 seconds.

The Analog Inputs File0 Log file can only be sent to an FTP server, the file is a text file in a standard csv
format (comma-separated values).

The log can be sent in a report every N minutes (with N <= 1 minute).

Note that the log is sent N minutes after the modem is switched off.

For example if the log must be sent every 10 minutes we can obtain:

FIRST LOG SENT AT 12:00 -> COMMUNICATION TIME FOR SENDING THE LOG 1 MINUTE -> MODEM SWITCH
OFF AT 12:01

SECOND LOG SENT AT 12:01+10minutes= 12:11 -> TIME FOR SEND THE LOG 1 MINUTE -> MODEM SWITCH
OFF AT 12:12

THIRD LOG SENT AT 12:12+10minutes=12:22 -> TIME FOR SEND THE LOG 1 MINUTE -> MODEM SWITCH
OFF AT 12:23

…

A single file can contain a maximum of 64 Data Rows so more than one file report can be created (for
example sending a File0 Report every 120 minutes with analog inputs sampled at 30s will generate
120*2=240 Rows of data, so will be created 4 files).

The FTP file name is :

RTUNAMERTUCODE_YYYY-MM-DD_HH-MM_KKKK_File0.csv

Where:

RTUNAME: is the RTU Name configured with Easy RTU-LP Software

RTUCODE: is the numerical RTU code configured with Easy RTU-LP Software

YYYY-MM-DD_HH-MM: it’s the date/hour of the dispatch

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DATE

TIME

AIN1

AIN2

08/05/2017

13.48.09

1797

2500

08/05/2017

13.48.39

1797

2500

08/05/2017

13.49.09

1797

2500

08/05/2017

13.49.39

1798

2500

08/05/2017

13.50.09

1797

2500

08/05/2017

13.50.39

1798

2500

08/05/2017

13.51.09

1798

2500

08/05/2017

13.51.39

1797

2500

08/05/2017

13.52.09

1798

2500

08/05/2017

13.52.39

1798

2500

08/05/2017

13.53.09

1797

2500

KKKK: is a progressive alphanumerical code

File0: is a constant

An example file name is:

MRTU10001_2017-05-08_13-48_042C_File0.csv

The File contents is of this type:

….

Where AIN1 and AIN2 are in % values /100.

So for example in the first Row the AIN1 = 17,97% of the full scale and the AIN2 = 25.00% of the full scale

Note the 30s timestamp difference between two rows.

7.1. Analog Inputs log data buffering

If there is a network or FTP server fail, the RTU can buffer not sent data to the internal flash. The RTU will
try for 3 times before return to sleep, when there is a new connection the RTU will continue to send data
from the oldest value.

The first time the RTU will re-connect, only the not sent data will be send.

You must wait the second connection for try to re-align the log with the actual date/time.

8. EVENTS LOG FTP FILE (FILE1)

The Events File1 Log file can only be sent to an FTP server, the file is a text file in a standard csv format
(comma-separated values).

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DATE

TIME

EVENT

AIN1

AIN2

TOT1

TOT2

TOT3

TOT4

09/05/2017

15.11.56

80000000 0 0 0 0 0 0

09/05/2017

15.11.56

40000000 0 0 0 0 0 0

The log can be sent in a report every N minutes (where N is configurable from the Software Easy LP-RTU)
but is sent only if at least one event is happened in the report time.

Note that the log is sent N minutes after the modem switch off.

For example if the log must be sent every 10 minutes we can obtain:

FIRST LOG SENT AT 12:00 -> TIME FOR SEND THE LOG 1 MINUTE -> MODEM SWITCH OFF AT 12:01

SECOND LOG SENT AT 12:01 +10minutes = 12:11 -> TIME FOR SEND THE LOG 1 MINUTE -> MODEM SWITCH
OFF AT 12:12

THIRD LOG SENT AT 12:12 +10minutes =12:22 -> TIME FOR SEND THE LOG 1 MINUTE -> MODEM SWITCH
OFF AT 12:23

…

A single file can contain a maximum of 64 Data Rows so more than one file1 report can be created.

The FTP file name is :

RTUNAMERTUCODE_YYYY-MM-DD_HH-MM_KKKK_File1.csv

Where:

RTUNAME: is the RTU Name configured with Easy RTU-LP Software

RTUCODE: is the numerical RTU code configured with Easy RTU-LP Software

YYYY-MM-DD_HH-MM: it’s the date/hour of the dispatch

KKKK: is a progressive alphanumerical code

File0: is a constant

An example file name is: MRTU10001_2017-05-08_13-48_042C_File1.csv

The File contents is of this type:

Where Event can be obtained from the table below:

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EVENT

EQUIVALENT EVENT NR

DESCRIPTION

1

00

DIN1 : Switched to logic

level 0

2

01

DIN2 : Switched to logic

level 0

4

02

DIN3 : Switched to logic

level 0

8

03

DIN4 : Switched to logic

level 0

10

04

DIN1 : Switched to logic

level 1

20

05

DIN2 : Switched to logic

level 1

40

06

DIN3 : Switched to logic

level 1

80

07

DIN4 : Switched to logic

level 1

100

08

AIN1 < MIN

200

09

AIN2 < MIN

400

10

AIN1 > MAX

800

11

AIN2 > MAX

1000

12

TOT1 > Threshold 1

2000

13

TOT2 > Threshold 1

4000

14

TOT3 > Threshold 1

8000

15

TOT4 > Threshold 1

1 0000

16

TOT1 > Threshold 2

2 0000

17

TOT2 > Threshold 2

4 0000

18

TOT3 > Threshold 2

8 0000

19

TOT4 > Threshold 2

10 0000

20

TOT1 Reset/Overflow

(0000)

20 0000

21

TOT2 Reset/Overflow

(0000)

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40 0000

22

TOT3 Reset/Overflow

(0000)

80 0000

23

TOT4 Reset/Overflow

(0000)

100 0000

24

SMS 0 (event SMS0)

400 0000

26

Timer Seconds (count of

seconds)

2000 0000

29

Timer Day

4000 0000

30

RTU LOW BATTERY

8000 0000

31

RTU RESET

8.1. Events log data buffering

If there is a network or FTP server fail, the RTU can buffer not sent data to the internal flash. The RTU will
try for 3 times before return to sleep, when there is a new connection the RTU will continue to send data
from the oldest value.

The first time the RTU will re-connect, only the not sent data will be send.

You must wait the second connection for try to re-align the log with the actual date/time.

9. MODBUS RTU PROTOCOL

The modbus RTU protocol is available from the RS232 Port.

The communication parameters are:

19200 Baud, 8 data bit, parity None.

The Modbus slave addess is 1.

The modbus function code supported are:

03 Read Holding Registers (Max 16 registers)

04 Read Input Registers (Max 16 registers at a time)

20 Read File Record (Read of a File record)

06 Write Single Register

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ADDRRESS

OFFSET

TAG

REGISTER TYPE

RO/RW

INFO

40001

0

CH01_MEASURE

Signed 16 bits

RO

Analog Channel 1 value (in Scale

%)

From -10000 (-100.00%) to

+10000 (+100.00 %)

40002

1

CH02_MEASURE

Signed 16 bits

RO

Analog Channel 2 value (in Scale

%)

From -10000 (-100.00%) to

+10000 (+100.00 %)

40003

2

DIGITAL IN_OUT

Unsigned 16 bits

RO

Bit 0 (LSB) Digital Input 1 value
Bit 1 Digital Input 2 value
Bit 2 Digital Input 3 value
Bit 3 Digital Input 4 value
Bit 4 Not Used
Bit 5 Not Used
Bit 6 Digital Output 1 value
Bit 7 Digital Output 2 value
Bit 8 TOT1 > MIN
Bit 9 TOT2 > MIN
Bit 10 TOT3 > MIN
Bit 11 TOT4 > MIN
Bit 12 TOT1 > MAX
Bit 13 TOT2 > MAX
Bit 14 TOT3 > MAX
Bit 15 (MSB) TOT4 > MAX

40004

3

INTERNAL USE

-

-

-

40005

4

BATTERY VOLTAGE

Unsigned 16 bits

RO

Battery voltage in V*10

For example 100 = 10.0V

Note that the Battery voltage is

measured only when the modem

is switched ON

40006

5

TEMPERATURE

Signed 16 Bits

RO

Temperature value in °C*10

For example 240 = 24.0°C

16 Write Multiple Registers (Max 16 registers)

9.1. MODBUS RTU ADDRESSES TABLE

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40007
40008

6 7 TOTALIZER 1 LSW

TOTALIZER 1 MSW

Unsigned 32 Bits

RO

Totalizer 1 value

40009
40010

8 9 TOTALIZER 2 LSW

TOTALIZER 2 MSW

Unsigned 32 Bits

RO

Totalizer 2 value

40011
40012

10
11

TOTALIZER 3 LSW

TOTALIZER 3 MSW

Unsigned 32 Bits

RO

Totalizer 3 value

40013
40014

12
13

TOTALIZER 4 LSW

TOTALIZER 4 MSW

Unsigned 32 Bits

RO

Totalizer 4 value

40101

100

MACHINE_ID

Unsigned 16 Bits

RO

Internal Code

40102

101

FW CODE

Unsigned 16 Bits

RO

Firmware Version

41043

1042

ACTIONS

Unsigned 16 Bits

RW

Actions Registers

1 = OUT1 reset
2 = OUT2 reset
4 = OUT1 set
8 = OUT2 set
16 =OUT1 toggle
32 = OUT2 toggle
68 = OUT1 start impulse
132 = OUT2 start impulse
256= TOT1 Reset
512 = TOT2 Reset
1024 = TOT3 Reset
2048 = TOT4 Reset

10. SUPPORTED SMS COMMANDS

All SMS commands must terminate with a date/hour.

The date/hour filed is not controlled by the RTU but must be a valid value.

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10.1. Setting the Telephone SMS Character Alphabet

Some Smartphones send SMS with UNICODE characters instead of using the GSM alphabet.

RTU-LP only runs SMS commands with GSM alphabet.

In most cases, SMS characters are set to AUTO alphabet by default.

If the RTU does not recognise any SMS command, check the alphabet used by the phone.

For Android smartphones:

Press the Message icon -> Others -> Settings -> Other Settings -> SMS -> Change writing -> GSM alphabet

10.2. CM - Change Wake-Up Window Parameters

The “CM” SMS message can be used for change the Wake-up window parameters:

CM a bb bb ccccc f ddmmyyhhmm

Where:

a = Wake-up window frequency (1 = every day, 2 = every 2 days,…)
bb bb = hh mm of the wake-up
ccccc = Wake-up window duration in seconds
f = report send frequency (1= every wake up, 2 = every 2 wake up, 3 = every 3 wake up, 4 = Never)
ddmmyyyyhhmm = sending date and sending time

The RTU response is:

CM a bb bb ccccc f /ddmmyyhhmm:RTUCODE

Example of usage:

CM 1 14 33 120 1 0205171102

10.3. CS - Change Analog Threshold Parameters

The “CS” SMS message can be used for change the Threshold for analog inputs:

CS ddddd eeeee fffff ggggggggggg ddmmyyhhmm

Where:

ddddd = Analog 1 MAXIMUM THRESHOLD (in % of the scale, for example 8000 = 80.00%)

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eeeee = Analog 1 MINIMUM THRESHOLD (in % of the scale, for example 8000 = 80.00%)
fffff = Analog 2 MAXIMUM THRESHOLD (in % of the scale, for example 8000 = 80.00%)
kkkkk = Analog 2 MINIMUM THRESHOLD (in % of the scale, for example 8000 = 80.00%)
ddmmyyyyhhmm = sending date and sending time

The RTU response is:

CS ±ddddd ±eeeee 2> ±fffff ±kkkkk /ddmmyyhhmm:RTUCODE

Example of usage:

CS 5000 1000 4000 500 0205171102

10.4. CT - Change Address book Telephone numbers

The “CT” SMS message can be used for change the telephone numbers that the RTU use for sending SMS:

CT aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbb ddmmyyhhmm

Where:

aaaaaaaaaaaaaaa = is the first Telephone number (without the “+” symbol)
bbbbbbbbbbbbbb = is the second Telephone number (without the “+” symbol)
ddmmyyyyhhmm = sending date and sending time

The RTU response is:

CT aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbb /ddmmyyhhmm:RTUCODE

Example of usage:

CT 39328123456789 39338456786452 1005171102

Change the numbers used from the RTU to send SMS with [phone] [phone]

10.5. AZ – Action Command

The “AZ” SMS message can be used for sending command to the RTU:

AZ aaa ddmmyyhhmm

Where aaa is the action code:

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ACTION CODE

INFO

1

OUT 1 RESET

2

OUT 2 RESET

4

OUT 1 SET

8

OUT 2 SET

16

OUT 1 TOGGLE

32

OUT 2 TOGGLE

68

OUT 1 START PULSE

132

OUT 2 START PULSE

256

TOTALIZER 1 RESET TO 0

512

TOTALIZER 2 RESET TO 0

1024

TOTALIZER 3 RESET TO 0

2048

TOTALIZER 4 RESET TO 0

65535

RTU RESET

ddmmyyyyhhmm = sending date and sending time

The RTU response is:

AZ OK /ddmmyyhhmm:RTUCODE

Example of usage:

AZ 4 1005171102

Execute a Digital Output 1 SET

10.6. AZ – Synchronize DATE/HOUR

The “AZ” SMS message can be used also for sync date/hour using an offset:

AZ ±aaaa±MM±dd±hh±mm±ss ddmmyyhhmm

Where:

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EVENT NUMBER

DESCRIPTION

00

DIN1 : Switched to logic level 0

01

DIN2 : Switched to logic level 0

02

DIN3 : Switched to logic level 0

Add or subtract ±aaaa years to actual date

Add or subtract ±MM months to actual date

Add or subtract ±dd months to actual date

Add or subtract ±hh hours to actual time

Add or subtract ±mm minutes to actual time

Add or subtract ±ss seconds to actual time

ddmmyyyyhhmm = sending date and sending time

The RTU response is:

AZ OK /ddmmyyhhmm:RTUCODE

Example of usage:

AZ +0000+00+00+01+30+00 1005171102

Add 1h and 30m to actual time

AZ +0000+00+00-01-30+00 1005171102

Subtract 1h and 30m to actual time

10.7. CL - Change Events Label

The “CL” SMS message can be used for changing the text label linked to the event NR:

CL aa newlabel ddmmyyhhmm

Where:

aa = Event Number from table:

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03

DIN4 : Switched to logic level 0

04

DIN1 : Switched to logic level 1

05

DIN2 : Switched to logic level 1

06

DIN3 : Switched to logic level 1

07

DIN4 : Switched to logic level 1

08

AIN1 < MIN

09

AIN2 < MIN

10

AIN1 > MAX

11

AIN2 > MAX

12

TOT1 > Threshold 1

13

TOT2 > Threshold 1

14

TOT3 > Threshold 1

15

TOT4 > Threshold 1

16

TOT1 > Threshold 2

17

TOT2 > Threshold 2

18

TOT3 > Threshold 2

19

TOT4 > Threshold 2

20

TOT1 Reset/Overflow (0000)

21

TOT2 Reset/Overflow (0000)

22

TOT3 Reset/Overflow (0000)

23

TOT4 Reset/Overflow (0000)

24

SMS 0 (external event SMS)

26

Timer Seconds (count of seconds)

29

Timer Day

30

RTU LOW BATTERY

31

RTU RESET

newlabel = new text label

ddmmyyyyhhmm = sending date and sending time

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The RTU response is:

CL aa newlabel /ddmmyyhhmm:RTUCODE

Example of usage:

CL 0 D01_LOW 1005171102

Change the actual event 0 text label with “D01_LOW”

10.8. ES - SMS 0 EXTERNAL EVENT

The “ES” SMS message can be used for obtain the external event 24 that will cause a real time event

SMS/FTP file (if configured).

So this SMS is used for knowing the RTU state on demand:

ES 0 ddmmyyhhmm

Where:

0 = constant

ddmmyyyyhhmm = sending date and sending time

The RTU response is:

ES OK /ddmmyyyyhhmm:RTUCODE

After that a SMS real time event will be generated from the RTU

Example of usage:

ES 0 1005171102

Generate an external real time event NR 24

11. SOFTWARE CONFIGURATION: EASY RTU-LP

For configuring the RTU-LP-ST you must use the Easy RTU LP software and the “CONF” cable (supplied).

You can download the free software from the www.seneca.it website in the RTU-LP-ST section.

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12. FIRMWARE UPDATE

In order to include new functions, the system includes a firmware update option.

For updating the firmware use the Easy RTU-LP software and the “UPDATE” cable (supplied).

For updating the firmware the firmware update cable must be used.

CAUTION!

-BEFORE UPDATING firmware, copy the current configuration.

-Once the firmware is updated, the previous setup may be deleted so the RTU must be re­configured.

13. ENERGY ANALYSIS

The RTU-LP battery duration depends from the user configuration.

The standard 10,8V lithium battery can supply 12500 mAh at 10,8V.

It’s best in the calculation to use the 80% of the full battery capacity = 10400 mAh.

The RTU Consumption with all inputs OFF and Analog Inputs measured at 30s without powering the
external sensors is:

0.375 mA average at 10.8V.

In these conditions, the RTU will work for about:

10400 mAh/0.375mAh= 27733 hours = 1155 days = more than 3 years

When the RTU send an SMS event the consumption calculation is:

About 90 seconds for sending 1 SMS (with GSM Field = 3/3), in this condition the RTU consumption is:

21mA average at 10.8V

So about 21mA*(90seconds/3600seconds in 1h)=0.525 mAh

So for acquiring and sending 1 SMS for day the total consumption is:

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0.525 mAh + (0.375mA*24h)=9.525 mAh

And so, sending one SMS every day the total consumption is :

10400 mAh/9.525mAh for day= more than 1091 days = about 3 years

CAUTION!

If the GSM field is low the RTU can try up to 3 times to send a SMS or a file in FTP.

For the send SMS energy calculation (0.525mAh) the GSM field is supposed to be the maximum (3/3) with
no retry.