IO Boards for Systems IPLOG-GAMA and LAN-RING

Control Playback of Audio Files via Modbus

This example shows how writing log.1 to the modbus COIL register turns on playback of an audio file from IPLOG. One COIL register is used to end the currently playing file. You can control the volume setting by writing to the HOLDING register.

Used Blocks

GEN_PULSE - Pulse generator.
AUDIO_VOLUME - Adjust the volume for the left and right channels.
MODBUS_GET_HOLDING - Reading a value from the modbus register.
WORD_TO_USINT - Data type conversion.
MODBUS_TCP_SLAVE - Block for configuring the IPLOG unit as a modbus tcp slave.
R_TRIG - Rising edge detection.
AUDIO_STOP - End of the currently playing file / stream.
Modbus_Audio - User created block.

Created User Block

Mobile Application

This program is used to control the outputs of the IPLOG unit from the IPLOG mobile application. See. Mobile-APP manual.

Example of Creating a Thermostat for Heating

A common room thermostat works most often in an ON / OFF mode. In this mode, however, the temperature may start to "oscillate" and the value will constantly rise and fall for example, 0.1 °C. In this case, the heating would always be switched on and off and the operating life of the controls would gradually decrease. For this reason, hysteresis is used. Hysteresis is the dependence of the state of the system in its history. In our case, this can be thought of as the difference between the required and actual temperature. In the created program it is possible to change the hysteresis value for the for higher and lower limits.

Example of Hysteresis

19.8 = Is the temperature at which the heating system is reactivated. In the code section, this is written as temp_required - hystdown.
20 = Temperature required.
20.3 = Is the temperature at which the heating system is deactivated. In the code section, this is written as temp_required + hystup.

Example Given in the Program

An IPSEN-TH2 sensor is located in two rooms. In one room we want to heat to the required temperature of 20 °C and in the other room to 22 °C.
In the first room we keep the default hysteresis values written in the program code and in the second room we set our own values. The temperature values that we received from the IPSEN-TH2 sensor are multiplied by 10 and therefore even in the program the writing of all temperature values is multiplied by 10.

Example of User Block "thermostat"

Reading Values with SNMP v3

In this connection, the OID number that corresponds to the digital input IN1 on the switch is read from the IP address 192.168.6.7. If the read value is equal to 2 (closed state), the output RE1 on the IPLOG unit is closed.

Using Blocks

SNMP_v3_GET - Block for reading OID numbers via SNMPv3 protocol.
EQ (Returns true if inputs are equal) - Block for comparing input values.

IP Device Monitoring

In this connection, ARP queries determine whether the device with IP address 192.168.6.9 is connected or disconnected. If it is disconnected, the relay output is closed and the current status is also stored in the database.
Note
To use the datalogger of the blocks you must have the "metel-datalogger" package installed.

Used Blocks

IPWDG_ARP - IPWatchdog block.
DATALOGGER_W_STRING - Metel block for logging text strings into the mysql database.
NOT (Bitwise/Logical NOT) - Block for negating the input value 0->1, 1->0.

Tamper Monitoring and System Control via SMS

This example shows how to use function blocks for sending and receiving SMS messages. The system can be armed by sending SMS with text "Arm" or disarm sending SMS "Disarm", thereby simultaneously activating or deactivating the relay output. By sending an SMS with text Info, Iplog sends a message, the state of the current system (System is armed or System is disarmed ). If a typo is made when sending an SMS, Iplog will automatically send a message that it is an unknown command. Iplog monitors the switchboard tamper and sends an SMS message Tamper when
the system is armed and the door is open. "Tamper Opened !"

Used Blocks

SMS_TX - Block for sending SMS messages from the IPLOG unit.
SMS_RX - Block for processing received SMS messages in the IPLOG unit.
AND (Bitwise/Logical AND) - Logical AND function.
EQ (Returns true if inputs are equal) - Block for comparing input values.
MOVE_STRING (Copies the input value to the output) - Copy input string to output.
TP (Timer Pulse: generates a pulse of width PT for each input rising edge) - Timer.
SR (Bistable function block (set dominant)) - Flip-flop SR.

Sending of E-mail

This connection sends an e-mail when input 1 is activated.

Used Blocks

EMAIL_ENC_SSL - An encryption block that supports the SMTP server.
EMAIL_SEND - Send an email.

Listing Error Codes to the Console

Most Metel blocks contain ERR_ID outputs where an error code is written. In this case, the code is written to the console.

Used Blocks

EQ_STRING (Returns true if inputs are equal) - Block for comparing text strings.
MOVE_STRING (Copies the input value to the output) - Copies the input string to the output.
ERR_TO_STRING - Converts data types to text string.
DEBUG_CONSOLE - Lists strings to the console.

Audio

The audio blocks are intended for playing audio files from the unit's IPLOG memory or playing a music stream.
Note
To use audio blocks it is necessary to have the package "metel-vs10xx" installed and to use an IF-06 module.

Used Blocks

UINT_TO_REAL (Datatype convertion) - Converts the UINT data type to REAL.
MUL (Numerical multiplication) - Numeric multiplication.
REAL_TO_USINT (Datatype convertion) - Converts the REAL data type to USINT.
AUDIO_VOLUME - Changes the volume of the left and right channels.
AUDIO_PLAY_FILE - Plays audio file.
AUDIO_PLAY_HTTP - Plays audio stream.
AUDIO_STOP - Stops the currently playing file or stream.

Modbus TCP Master Mode

Modbus TCP Master mode is used to read or set modbus registers to modbus slave devices connected to the LAN. In this situation, it is expected that the input on the IPLOG unit controls the relay output on the switch.

Used Blocks

R_TRIG (Rising edge detector block) - Rising edge detection.
F_TRIG (Falling edge detector block) - Detection of the falling edge.
OR (Bitwise/Logical OR) - Function OR.
MODBUS_TCP_W_COIL - Metel block for writing coil registers to modbus slave device.

Modbus RTU Master Mode

Modbus RTU Master mode is used to read or set modbus registers to modbus slave devices connected to the IPLOG unit via the RS485 bus.

Used Blocks

MODBUS_RTU_CFG - Metel block for RS485 bus configuration, BUS 1 = /dev/ttyS3, BUS 2 = /dev/ttyS2
GEN_PULSE - Metel block that generates every 1s pulse.
MODBUS_RTU_R_DISCRETE - Metel block for reading a discrete register on modbus slave equipment.

Datalogger

In this case, the connection logs every temperature change to the mysql database in the IPLOG device.
Note
To use datalogger of blocks it is necessary to have installed package "metel-datalogger".

Used Block

EQ (Returns true if inputs are equal) - Block for comparing input values.
MOVE (Copies the input value to the output) - Copies the input value to the output.
DATALOGGER_W_DINT - Metel block for DINT logging to the mysql database.

Example of an Extract from the Database

TCP Pattern

The connection can be used to receive TCP notifications from other devices, eg camera, recorder, etc. In this case, the IPLOG switches to relay output if it receives a TCP notification with a text "Start" and the relay output is deactivated after receiving a TCP notification with a text "End".

Used Blocks

TCP_RX (Metel block for receiving TCP pattern) - Block for TCP pattern processing. If it is receiving a pattern to the specified port and it will contain the entered text, the log.1 will be set on the output with name contains.
SR (Bistable function block (set dominant)) - Flip-Flop SR.

Logical AND and OR in LD

An example of creating logical AND, OR in LD programming.

Timer

The wiring can be used to switch on the lighting by pressing button 1 or button 2. The lighting is than activated for 10 seconds.

Signaling

The wiring can be applied as a signal to release the switch when opening the switchboard or alarm system cabinet.

Multiple Press Button (FBD)

Usage can be found, for example, in the switch, when the first press lights up the lighting and others change the color, number of lights or intensity.

Used Blocks

CTU (Up-counter: CV increments at each positive edge of CU) - Forward counter.
EQ (Returns true if inputs are equal) - Block for comparing input values.
RS (Bistable function block (reset dominant)) - RS flip-flop.

PIR Connection to BI Input

The wiring can be used to differentiate the status of Sabotage Short, Normal , Alarm and Sabotage open on the PIR sensor.

USed Blocks

LE (Returns TRUE if IN1 is less-or-equal than IN2 (and IN2 less-or-equal than IN3, etc)) - Compares values on inputs and in the event IN1 is less than or equal to IN2 it is output log. 1.
GT (Returns TRUE if IN1 greater than IN2 (and IN2 greater than IN3, etc)) - It compares the values on the inputs, and when the value on IN1 is greater than the value on IN2, the output is log. 1.
AND (Bitwise/Logical AND) - Logical AND
OR (Bitwise/Logical OR) - Logical OR

Timer

The wiring can be used to switch on the lighting by pressing button 1 or button 2. The lighting is activated for 10 seconds.

Used Blocks

OR (Bitwise/Logical OR) - Logical OR
TP (Timer Pulse: generates a pulse of width PT for each input rising edge) - Timer

Signaling

The wiring can be applied as a signal to release the switch when opening the switchboard or alarm system cabinet.

Used Blocks

MOVE (Copies the input value to the output) - Copies the input value to the output.

Parking System

A useful system that is able to analyze the number of cars in the building and continuously updates the occupancy status according to the outgoing cars and signals it.

Used Blocks

CTDUD (Up-Down Counter) - Forward and reverse counter.
GE (Returns TRUE if IN1 greater or equal than IN2) - A block for comparing the value of whether IN1 is greater than or equal to IN2.
NOT (Bitwise/Logical NOT) - Block for negating the input value 0->1, 1->0.