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Slave ID

The GRD will answer when it receives a Modbus query to this Modbus slave ID

Exceptions

If enabled the GRD will answer with an exception to a query sent with an invalid command, address
range or value.

32 bits mode

AN an P channels are mapped in 32 bit registers. Here you can configure if the most significant word is
mapped in the first or the second register

Channels mapping

This is how GRD channels are mapped

Start Address

End Address

GRD Channel

Format

10001

10100

I1 a I100

Bit

00001

00100

O1 a O100

Bit

40001

40200

AN1 a AN100

32 Bits integer

40201

40400

PI1 a PI100

32 Bits integer

Example. On a GRD3625-XF-3G or MQ with the default configuration the physical I/Os are mapped like
this

Start Address

End Address

GRD Channel

10001

10006

I1 to I6

00001

00006

O1 to O6

40001

40008

AN1 to AN4

40201

40212

PI1 to PI6

2020-10-05

GRD-MQ User Manual

GRD's Modbus Slave

70 / 84

Summary of Contents for GRD-MQ Series

Page 1: ... Embedded MODBUS master Configuration 39 Channels 42 Reports and Historical records 52 Remote Serial Port 52 Remote Serial Port over MQTT 53 Remote configuration 53 Remote configuration over MQTT 55 SMS 55 SMS Monitoring and Configuration 61 SMS Alarms 68 GRD s Modbus Slave 71 Scripts Introduction 72 Scripts Publish Subscribe 74 Models 74 GRD1620 MQ 3G 76 GRD3621 MQ 3G 79 GRD3625 MQ 3G 81 GRD3534 ...

Page 2: ...ial port via MQTT broker SMS alarms control Physical inputs outputs Modbus inputs outputs embedded Modbus master Serial port data using script programming Local input output control using script programming GPRS RTU Datalogger to MQTT broker There are hundreds of types of sensors that can be contacted directly to the GRD MQ inputs to measure different types of variables Depending on the GRD MQ mod...

Page 3: ...serial port in Remote mode Configure the serial ports publish and subscribe topics SMS alarms control The GRD MQ can send SMS alarms to up to 8 recipients based on the value of its inputs You can also send and SMS to the GRD MQ to ask for the value of a particular input output or to activate an output This inputs outputs can be physical or Modbus signals The SMS feature can be used together with G...

Page 4: ...6 8 8 8 3 2G 2 5G 3G Yes Yes External 10 to 30Vcc 1 Digital Inputs Outputs are configurable and share the same terminals 2 Digital inputs can be use as pulse inputs 3 Some digital inputs can be use as pulse inputs 4 A PT100 temperature sensor can be connected to AI1 Wiring USB configuration port All GRD models have a USB communication port This port is used to configure the GRD For the connection ...

Page 5: ...lternate blinking with the PWR and LINK LEDs Linking together with PWR LED Low signal level On Slow blinking Failure in connection with MW retrying in a few seconds Installation of the SIM card Requirements For the correct operation of the equipment the Micro SIM card must meet the following requirements A subscription to GSM and GPRS 3G services It must be cleared to be installed in any equipment...

Page 6: ...requested How to place the SIM card in the GRD Place the SIM inside the GRD as shown in the figure or press it to remove Do not insert o remove the SIM card while the GRD is powered on GRD1620 XF 3G GRD3621 XF 3G GRD3625 XF 3G GRD3534 XF 3G 2020 11 05 GRD MQ User Manual GRD Instalation 5 84 ...

Page 7: ...ion Click on Next to continue Destination folder Select the folder for the installation of the application program Wait for the installation program to copy all necessary files onto the hard disk and press Finish to end the installation process Once installed you will see in the Programs menu a folder called Exemys Inside the folder you will find another folder called GRDconfig this folder contain...

Page 8: ... have the PC connected to the GRD MQ using the cable described in GRD models Installation To establish the connection select the menu option Communication Open Local Connection or press the button If the communication fails verify that The cable connecting the PC to the GRD is the correct one The GRD is on The driver is installed correctly After a few moments you will be able to see that the state...

Page 9: ...d indicating on the first screen the model IMEI etc You will always have to read the GRD parameters to be able to modify the parameters or for monitoring purposes If the Configurator finds an unknown model it will not enable any of the screens Download the latest GRDconfig release from here http www exemys com GRDconfig GRD MQ User Manual GRD Configurator 8 84 ...

Page 10: ... standard configuration plus the change of GSM band in case of necessity this is because this parameter is not sent by default It is very important to take into account that the GSM band in which the GRD will operate has to be configured according to the geographical area Monitoring To access the monitoring area where all the GRD parameters can be seen you should press the Monitor button GRD MQ Us...

Page 11: ...to save the GRDconfiguration so if we have to configure many equipments the same way we won t have to load again the parameters one by one the only thing to take into account is that the GRD ID number will have to be changed and avoiding to have a duplicate To create and save a configuration we don t need to have a GRD connected only clicking in File New or on the icon a list of the models will be...

Page 12: ...h File Save As or with the icon to load them later when the GRD is connected Once the configuration is saved we can open it and load to multiple GRDs entering File Open or with the icon 2020 11 19 GRD MQ User Manual GRD Configurator 11 84 ...

Page 13: ...If you place a SIM card with and activated PIN security code it must be configured in the GRD in order to have access Remember that if you enter a wrong PIN three consecutive times the SIM card will block To unblock it you will have to enter the PUK of the SIM card For more information check with the cell phone operator To load the PIN go to the GSM GPRS General Configuration tab And then load it ...

Page 14: ...een placed is blocked or if the configured PIN is correct check the SIM status in the monitoring option GPRS service Enabling the connection with the GPRS The enabled option of the GPRS must be verified in the GSM GPRS General Configuration tab GPRS is only used if the GRD needs to be connected to the MW If you are only planning to send SMS you can disable GPRS GRD MQ User Manual GSM GPRS Connecti...

Page 15: ...ce For this you have to tell the equipment the corresponding operator of the installed SIM card or the APN parameters user and password These parameters are found in the GSM GPRS SIM x tab Where x is the SIM number since it can be dual depending on the model GRD MQ User Manual GSM GPRS Connection 14 84 ...

Page 16: ...RD is used with the same cell phone operator To do this you have to go to Software Configuration Properties A window will be displayed on which we will be able to enter a name to recognize the configuration APN user and password 2017 06 02 GRD MQ User Manual GSM GPRS Connection 15 84 ...

Page 17: ...tion The broker s address and port are configured on the MQTT tab Enabling the connection with the broker When this option is enabled we tell the cLAN MQ to establish connection with the specified configuration If this option is disabled the cLAN MQ will not establish outgoing connections Host Port The IP address or URL of the server where the broker is running must be entered here The cLAN MQ can...

Page 18: ...n the configuration software Client ID Username y Password This parameters must match the ones configured on the broker Keep Alive Time in seconds to send the MQTT keep alive message to keep the link alive in case there s no other MQTT message Certificates upload You must be connected to the cLAN to upload the certificates They are not included in the configuration After pressing the Certificates ...

Page 19: ...e configurator click on the Monitor button Then the following screen will be displayed From here the following parameters related to the connection are of interest Signal SIM State GPRS State and Link State Signal level It indicates the signal level in dBm the minimum value is 113 dBm data transmission is impossible at this value Use this chart as reference for signal qualtity SIM State Disabled T...

Page 20: ...a GSM Connecting Is in the process of connection Connected Successful connection to GPRS Error Error in the connection to GPRS it will retry in 30 seconds Link State The TCP connection state can also be monitored Remember that to be able to establish such a connection you must count first on a GPRS service Once the GPRS connection is established the possible TCP connection states are Disabled The ...

Page 21: ...losed this could happen because a router or firewall are blocking it Host Closed Connection This is an event that happens when the server closes the connection This could be because the broker service has stopped the server turned off the connection to Internet dropped or any motive by which the server loses connectivity Logging in The connection has been established and the GRD is going through t...

Page 22: ... master to expand the I Os Script To parse incomming data or send data from the script only on devices with script programming support Modbus Slave To use the Embedded Modbus slave to read write the device channels Physical Modbus or script Remote to access the serial remotely port using publish subscript Data output from MW transparent port It allows you to configure which serial port can be reac...

Page 23: ...0 1000ms once data are received the device will wait in silence during this period before sending the packet through the network These criteria incorporate a delay in the transmission of the communication so care must be taken depending on the serial communication protocol being used End character 0 255 It is the end character of a serial stream before sending the data If the end character criteri...

Page 24: ...cal inputs and not to inputs from the Modbus queries For the configuration of the parameters you will have to enter the Inputs Outputs menu and then select the type of input output which are Digital inputs Digital outputs Analog inputs Digital inputs When we enter the configuration of a digital input we will see that we can configure 2 parameters one is the anti rebound to avoid noise and the coun...

Page 25: ...0 ms The counting divisor can take a value between 1 and 1000 On the cLAN2205 XF cLAN2205 MQ GRD3621 XF 3G GRD3621 MQ 3G GRD3625 XF 3G and GRD3625 MQ 3G you must configure wether a IO terminal will work as an input or as an output Take special care not to apply direct voltage to a terminal configured as an output and in ON state GRD MQ User Manual Physical Inputs Outputs 24 84 ...

Page 26: ...Analog inputs GRD MQ User Manual Physical Inputs Outputs 25 84 ...

Page 27: ...an select the operational mode depending on the GRD cLAN model this refers to whether we are going to measure voltage or current and its resolution The analog inputs can be configured as follows GRD MQ User Manual Physical Inputs Outputs 26 84 ...

Page 28: ...with 3 decimal digits 0 to 1V with 4 decimal digits 0 to 10V with 2 decimal digits 0 to 10V with 3 decimal digits Current 4 to 20mA with 2 decimal digits 4 to 20mA with 3 decimal digits Temperature PT100 GRD 3621 XF 3G and GRD 3621 MQ 3G only 199 to 849 ºC with decimal digit 2020 10 05 GRD MQ User Manual Physical Inputs Outputs 27 84 ...

Page 29: ... To activate the digital inputs a continuous voltage must be applied externally This source of power has to share the GND terminal with the power supply of the equipment If necessary the same power supply that feeds the GRD can be used The input is of a Sinking type It accepts sensor or PNP Sourcing type devices GRD3621 XF 3G GRD3625 XF 3G and GRD3621 MQ 3G GRD3625 MQ 3G Parameter Minimum Maximum ...

Page 30: ...ed must be fed with an external power supply and they have to share the GND Terminal with the equipment power supply If necessary the same power supply used to feed the equipment can be used The output type is NPN Sourcing type Open collector GRD3621 XF 3G GRD3625 XF 3G and GRD3621 MQ 3G GRD3625 MQ 3G Parameter Maximum Units Withstand voltage 50 Vdc Current 200 mA GRD3534 XF 3G and GRD3534 MQ 3G P...

Page 31: ...e equipment or if necessary the same power supply feeding the GRD can be used The following graph shows how to connect a relay to a digital output of the equipment Analog Inputs Analog inputs refer to the GND Terminal of the equipment consequently the power supply used to feed the sensor must share the GND terminal with the equipment Voltage inputs 0 10V 0 1V Parameter Value Units Full scale 10 1 ...

Page 32: ...ng the power supply with the equipment for passive sensors or for active sensors with independent power supply PT100 inputs GRD 3621 XF 3G and GRD 3621 MQ 3G only Parameter Value Units Full scale 199 to 849 ºC Precision 0 1 ºC In the following diagrams you can see how to connect 2 and 3 wires PT100 sensors GRD MQ User Manual Features of power supply and inputs outputs 31 84 ...

Page 33: ...2020 09 28 GRD MQ User Manual Features of power supply and inputs outputs 32 84 ...

Page 34: ...n parameters Each one of the queries can be mapped as an input output channel and be able to configure the generation of Historicals and reports In GRD Config you will find a tab called Modbus where you can configure the general characteristics of the Modbus master and Queries To use the Modbus master set the serial port in Modbus Master mode Configuration of the Modbus master Configure one serial...

Page 35: ...Transmission mode It refers to the Modbus protocol to be used being RTU or ASCII GRD MQ User Manual Embedded MODBUS master Configuration 34 84 ...

Page 36: ...lid response before considering the value of the query as 0 while the quantity of retries is not met the master will maintain the previous value Configuration of the Modbus queries Once the master is configured we can add the desired queries entering the Modbus Queries menu and inside Modbus Inside the Modbus Queries a list will show us all the added queries and their parameters which we will be a...

Page 37: ...e will be able to configure all the parameters of the query Slave ID It is the address of the slave we wish to query Command Here we can configure the type of register to be queried INPUT REGISTER GRD MQ User Manual Embedded MODBUS master Configuration 36 84 ...

Page 38: ...01 will get registers 40002 40001 FLOAT 32 BITS Address 40001 will get registers 40002 40001 INTEGER 64 BITS Address 40001 will get registers 40004 40001 FLOAT 64 BITS Address 40001 will get registers 40004 40001 Swapped Registers will be ordered in a diferent way in querys with register length greater than one INTEGER 32 BIT SIGNED Address 40001 will get registers 40001 40002 FLOAT 32 BITS Addres...

Page 39: ...GNED AN or PI FLOAT 32 BITS AN or PI 4 INTEGER 64 BITS FLOAT 64 BITS AN or PI Input Register 1 BIT WORD 0 to 15 I or O INTEGER AN or PI INTEGER SIGNED AN or PI 2 INTEGER 32 BITS SIGNED AN or PI FLOAT 32 BITS AN or PI 4 INTEGER 64 BITS FLOAT 64 BITS AN or PI 2020 11 20 GRD MQ User Manual Embedded MODBUS master Configuration 38 84 ...

Page 40: ...nput PIx is a pulse input channel Beyond the most common way to link the channels like the previous example it can be done in a disordered manner or repeating them This means that you could create a channel I5 linked with the DI13 input and a channel I6 that is also linked to the DI13 input On GRD cLAN with serial port I O channels can be linked to Modbus queries if you use the embedded Modbus mas...

Page 41: ... you ll have the option to add or remove it is important to point out that within each channel only inputs and outputs compatible with that channel will appear You will now see an example of how to add a digital input channel GRD MQ User Manual Channels 40 84 ...

Page 42: ...l source called Mem is added This source is linked to a 100 position volatile memori that can be read and wrote from the script using read_io 305 and write_io 305 The signal level can be configured as analog channel source in GRD XF 2G with firmware 4 0 0 or higher This feature is available in all GRD 3G 2020 10 29 GRD MQ User Manual Channels 41 84 ...

Page 43: ... GRD MQ and are sent to the broker If there is no connection the registers remain in the equipment until they are recovered Topics and formats to publish reports and historical records are configured on the MQTT tab Historicals and reports are configured on the channels Reports and historical records topics and formats You can configure a different topic format for reports for each channel type Th...

Page 44: ...4 A1 893 A2 41 A3 312 A4 1933 Historical record for analog input channel 2 at Feb21 2020 08 02 20pm with value 41 ts 1582315320000 values A2HT 41 Digital output channel 2 with value 1 Historical record for digital output channel 2 at Feb21 2020 08 05 34pm with value 1 ts 1582315534000 values O2HC 1 Reports We will now see the types of reports and how to configure them The reports are configured in...

Page 45: ... Report by time It defines the time in minutes which determines how often a report message is generated Let s suppose that we are interested in updating an input channel every five minutes independently of the changes that occur the only thing we need to do is to enable the report by time and configure in 5 minutes this will force the report message that will update the input value in the broker e...

Page 46: ...s a configured absolute value Report by time It defines a time in minutes which determines how often a report message is generated Digital outputs channels reports In this case we only count on a temporary report the change report is always enabled this means that when a change occurs in one of the outputs it will be immediately reported The purpose of having the change report permanently enabled ...

Page 47: ...s channel by counts or by time Report by time It defines time in minutes which determines how often a report message is generated Historical records Historicals allow the device to store the events as changes in inputs or outputs being either on line or off line and then transmit them to the broker for further visualization and analysis These Historicals will let you know the value and number of a...

Page 48: ...re shows the screen to enable these Historicals Analog input channels historical records Just as in digital inputs it is possible to keep a Historical of analog inputs under two clearly defined criteria On one side we have an alarm type register of Historicals that allows monitoring the limits of tensions with a determined value of hysteresis On the other side we can create a register of Historica...

Page 49: ...tween both a Historical by normal value is generated In this manner we can follow the evolution of the input when it fluctuates between the specified limits In addition to the maximums and minimums a value of hysteresis must be defined to avoid continuous generation of Historicals when the analog signal oscillates above a threshold value In the following figure we can see how the hysteresis mechan...

Page 50: ... the register time is due when this happens a Historical is generated with the maximum value measured in this period Minimum Historical by time This Historical is similar to the maximum but only registers the minimum value in the time period Average Historical by time The concept is the same as in the previous ones but in this case it calculates an average of the value of the channel in the time p...

Page 51: ...hown in the following figure We can also decide if once the Historical is generated we want the counter reset to 0 or not Delete Historicals In the need of erasing Historical registers this can be done by means of the GRD Config in the monitor window with the Delete button located next to the indicator of stored Historicals GRD MQ User Manual Reports and Historical records 50 84 ...

Page 52: ...h is connected It is important to disable the Windows option Automatic time change according to daylight savings time In case of being in a region with no daylight savings time change the time zone and in an area with daylight savings time change the time zone to a region with it and disable it then return to your time zone 2020 11 20 GRD MQ User Manual Reports and Historical records 51 84 ...

Page 53: ...ics and the format the payload will have Payload format b Binary data as received No data is filtered nor codified s Non printable ASCII values are filtered out ASCII 32 and ASCII 126 h String HEX ASCII Note If the serial port is configured in script mode publish subscribed data can still be access using read_str 25 and write_str 25 from the script 2020 11 20 GRD MQ User Manual Remote Serial Port ...

Page 54: ...the topic as explained later Configuration topic Identifying the device The device will add the ClientID to the base configuration topic Example Subscribe grdconfig enlace 1 clientID Publish grdconfig enlace 0 clientID Configuring the GRDconfig for remote MQTT configuration You must configure the broker access and the base configuration topic Go to Software Configuration MQTT Connection This base ...

Page 55: ...t to configure Once the link is established use the Monitor Get Configuration and Send Configuration buttons MQTT connection parameters and GPRS on GRD can t be modified remotely 2020 11 19 GRD MQ User Manual Remote configuration over MQTT 54 84 ...

Page 56: ...or occurred Before starting you must know the password allowing the modification of the configuration of the equipment The factory configuration disables the password then this field will be left empty unless it is enabled All commands are not case sensitive In all messages the separation between words must be exactly one space Protection Password Configuration SMS can be password protected This p...

Page 57: ...el can vary between 113 dbm and 51 dbm Note This command does not require a password Versions and IMEI Command Description VERSION Returns the versions of Hardware Software and IMEI Example of a response FIRbrokerARE 1 0 HARDWARE 1 0 IMEI 123456789123456 Note This command does not require a password GRD MQ configuration Modify GPRS parameters Using this command you can configure the apn user and p...

Page 58: ... or IP where the broker is located xxx xxx xxx xxx port TCP port in which the broker expects the GRD MQ connections 1 65535 Example CON 200 89 185 59 1026 password If the configuration was successful the GRD MQ will respond CON OK Client ID User Password Command Description MQTTID cid cid is the Client ID MQTTUSR usr usr is the MQTT user s name MQTTPSS pss psss the MQTT password The two following ...

Page 59: ...password if you did not have any PASSW newpassword Configuring a new password if you already have one PASSW newpassword previouspassword Erasing the password To leave the equipment without a password you must send a message leaving 2 spaces between the command and the previous password PASSW previouspassword Rebooting the GRD MQ Command Description RESET password Reboots the GRD MQ Reading Inputs ...

Page 60: ...everal PI channels GETPI Reads all PI channels Max 15 channels in on SMS If you receive three point ending the SMS it means that more information will be sent on another SMS Note If you configured an SMS alarm for this channel you will receive the full text you configured The text will change depending on the state of the I O Please read SMS alarms section for further information Setting outputs a...

Page 61: ...ueries Command Description SETPI P channel value The P channel will be set to value The value can be between 0 and 1 000 000 000 Script control Command Description STARTSCRIPT password Script interpreter will set to run mode Command Description STOPSCRIPT password Script interpreter will set to stop mode 2020 11 20 GRD MQ User Manual SMS Monitoring and Configuration 60 84 ...

Page 62: ...on the GRD Config software when working with these GRDs Enabling SMS alarms You need to enable which channel will send and SMS alarms Once you do it this channel will be listed on the SMS configuration On digital inputs channels you must enable the SMS by change option On digital outputs channels you must enable the SMS by change option GRD MQ User Manual SMS Alarms 61 84 ...

Page 63: ...nels you must enable the SMS by alarm option Limits should be configured later depending on the SMS scaling Phone Book To access it go to the SMS tab and then to press the Phone Book icon GRD MQ User Manual SMS Alarms 62 84 ...

Page 64: ...e Name is only used as a reference SMS selection After enabling the channels that will send SMS you can configured the text and scaling of each one Goto to the SMS tab and press the Message Configuration icon The press the Add Remove button GRD MQ User Manual SMS Alarms 63 84 ...

Page 65: ...when input 3 goes on but not when it goes off You can add up to 50 SMSs After selecting the messages you will see the default Message Where t is the timestamp i the channel number and v the value Since firmware version 1 5 q will be the timestamp in american date format month day year GRD MQ User Manual SMS Alarms 64 84 ...

Page 66: ...ect here which recipient will receive this particular SMS The maximum text length is 60 characters Using t v and i you can add the date value and channel number to the SMS text If the SMS is related to an analog input the AN scaling section will be enabled GRD MQ User Manual SMS Alarms 65 84 ...

Page 67: ...be shown On the top part Scaling you can select which scale type will be applied fo this input how many decimal digits will be used and the A B scaling values You can choose between linear scaling A x B or Two points scaling If the analog channels is related to a physical input you will usually use Two Points scaling GRD MQ User Manual SMS Alarms 66 84 ...

Page 68: ...rt Alarm Limits you can re define the Historical By Alarm limits but using the scaled values Editing the scaling will affect all the SMS related to the same analog channel 2019 11 28 GRD MQ User Manual SMS Alarms 67 84 ...

Page 69: ...lave mode This mode will allow you to read and write all GRD channels physical Modbus or script To use the Modbus slave configure one serial port in Modbus Slave mode Modbus slave configuration Go to the Modbus tab and select Modbus Slave GRD MQ User Manual GRD s Modbus Slave 68 84 ...

Page 70: ...Serial mode It refers to the Modbus protocol to be used being RTU or ASCII GRD MQ User Manual GRD s Modbus Slave 69 84 ...

Page 71: ...irst or the second register Channels mapping This is how GRD channels are mapped Start Address End Address GRD Channel Format 10001 10100 I1 a I100 Bit 00001 00100 O1 a O100 Bit 40001 40200 AN1 a AN100 32 Bits integer 40201 40400 PI1 a PI100 32 Bits integer Example On a GRD3625 XF 3G or MQ with the default configuration the physical I Os are mapped like this Start Address End Address GRD Channel 1...

Page 72: ...ng normally while the script is running Script Features Math operations Logic operations Timing functions Physical and Modbus channels readings Digital outputs control SMS sending and receiving GRD only Serial port data parsing Sending and receiving data using external Satellite modem XF models only Publish subscribe MQTT data MQ models only 2020 11 20 GRD MQ User Manual Scripts Introduction 71 84...

Page 73: ...be read To get the first message in the queue use read_str 1000 read_str 1000 c z z message text Script Publish You public message straight from the script code Go to the script programming manual for more information Before publishing it s suggest it to check if the broker connection is established read_io 1001 h 0 h 1 connection established Then set the topic to publish write_str 1001 v1 devices...

Page 74: ...2020 11 20 GRD MQ User Manual Scripts Publish Subscribe 73 84 ...

Page 75: ...lave Other protocols using script programming Version 2 Operating modes XF model Monitoring by WEB page Database GPRS datalogger MQ model MQTT client Monitoring from SCADA Remote access to serial port SMS alarms control Local control using script programming timing logic math I O control Server link GSM GPRS 2G 2 5G 3G Satellital with external satellite modem XF model only Wiring Wiring Power supp...

Page 76: ...Wiring Terminal Blocks 2020 10 05 GRD MQ User Manual GRD1620 MQ 3G 75 84 ...

Page 77: ...ype Analog Inputs 1 configurable as 0 1V 0 10V 4 20mA PT100 Software Hardware configurable 1 configurable as 0 1V 0 10V 4 20mA Software Power supply requirements 10 to 30 Vdc Dimensions 70 x 90 x 65 mm Operating Temperature 20ºC to 65ºC Data Acquisition Physical inputs outputs Operating modes XF model Monitoring by WEB page Database GPRS datalogger MQ model MQTT client Monitoring from SCADA SMS al...

Page 78: ...rature using a PT100 sensor It must be configured on the configuration software and with two internal jumpers To measure current or voltage set both jumpers to the VI position To connect a PT100 sensor set them at the PT position Disassemble the GRD carefully to reach the jumpers GRD MQ User Manual GRD3621 MQ 3G 77 84 ...

Page 79: ...2020 10 05 GRD MQ User Manual GRD3621 MQ 3G 78 84 ...

Page 80: ...ns 70 x 90 x 65 mm Operating Temperature 20ºC to 65ºC Data Acquisition Physical inputs outputs Modbus inputs outputs embedded Modbus master Embedded Modbus slave Other protocols using script programming Version 2 Operating modes XF model Monitoring by WEB page Database GPRS datalogger MQ model MQTT client Monitoring from SCADA Remote access to serial port SMS alarms control Local control using scr...

Page 81: ...board for its connections Port B is an RS485 port is of the 2 wire type TRB and TRB and has a terminal board for its connections Wiring Terminal Blocks 2020 10 05 GRD MQ User Manual GRD3625 MQ 3G 80 84 ...

Page 82: ...us master Embedded Modbus slave Other protocols using script programming Version 2 Operating modes XF model Monitoring by WEB page Database GPRS datalogger MQ model MQTT client Monitoring from SCADA Remote access to serial port SMS alarms control Local control using script programming timing logic math I O control Server link GSM GPRS 2G 2 5G 3G Satellital with external satellite modem XF model on...

Page 83: ...Wiring Terminal Blocks 2020 10 05 GRD MQ User Manual GRD3534 MQ 3G 82 84 ...

Page 84: ...S message requesting the connection status state command If the statusshows ERROR Verify that the configured Operator GPRS APN user password corresponds to the one on the SIM Card You can verify this value sending the SMS message list If the status shows CONNECTING for a long time it simply means there are delays in the network Wait until the GRD establishes the connection The broker connection ca...

Page 85: ...ection request ex That is requesting identification or authentication The connection is established but the communication fails If the Link LED remains constantly on and it does not blink is indicating that there is no data reception or transmission If the Link LED blinks sporadically it is indicating that data are being sent and or received In any case verify That the established broker connectio...

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