Seneca RTU-LP User manual

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MI004690_101_EN
SENECA s.r.l.
Via Austria 26, PADOVA –ITALY
Tel. [phone] Fax. [phone]
Web site: www.seneca.it
Customer service: [e-mail] (IT), supp[email protected]
(Other)
Commercial information: com[email protected] (IT), [email protected]
(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

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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

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1.2. Digital Inputs
Channels number
4
Rated Voltage
7 Vdc
Rated Current
4 mA
Maximum acquisition speed (frequency)
1 Hz
Isolation from other circuits
500 V
1.3. Digital outputs
Channels number
2
Output type
Bistable Relay (Reset and Set)
Maximum Voltage
30 Vdc
Maximum Current
1 A (resistive load)
1.4. Analog Inputs
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

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1.5. Communication Port
RS232
DB9 PORT
Protocol
Modbus RTU Slave
1.6. Storage units
Internal Flash
2 Mbytes for datalogger
Internal EEprom
64 Kbytes for configuration
1.7. Power supply
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

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No RS232 transmission
1.8. Regulations
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.
1.9. Default Case specifications
Case Dimensions
263 x 143 x 89 mm
(Without battery pack)
Protection rating
IP40
(without optional external case)
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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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:
GSM LED
MEANING
OFF
GSM MODEM OFF
(RTU NOT POWERED
OR IN SLEEP STATE)
FAST FLASHING
GSM NETWORK
SEARCHING
SLOW FLASHING
GSM NETWORK
CONNECTED

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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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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)
EVENT NUMBER
DESCRIPTION
00
DIN1 : Switched to logic level 0
01
DIN2 : Switched to logic level 0
02
DIN3 : Switched to logic level 0

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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