Conel Cda 70 User manual

CONTENTS

Contents

1. Safety instructions 4

2. Description of the CDA70 radio modem 5

2.1. General 5

2.2. Examples of possibles aplications 5

2.3. Description of individual components 5

2.3.1. Radio component 5

2.3.2. Modem component 6

2.3.3. Microcomputer 6

2.3.4. Inputs and outputs for telemetry 6

2.3.5. User interface protocols 7

2.3.6. Technical parameters 8

2.4. Radio modem status indication 9

2.5. User interfaces (connectors) 9

2.5.1. Connection of PORT1, PORT2 and PORT3 connectors (RS232) 10

2.5.2. Connection of PORT1 connectors (MBUS) 10

2.5.3. Connection of PORT2 connectors (RS485G) 10

2.5.4. Connection of PORT3 connectors (ETHERNET) 10

2.5.2. Connection of I/O connector (RJ45 panel socket) 10

2.5.3. Power supply connector (PWDD) 14

2.6. Antenna connection 16

2.7. Power supply 16

2.8. Port technical specification 16

2.9. Configuration of radio modem 16

2.10. Service cable 18

2.11. Accessories 19

2.12. Additional accessories 19

2.13. Mechanical drawing of CDA70 and recommendations for montage 20

2.14. Product marking 20

2.15. Assembly procedure 20

2.16. Product label 20

3. CIO - analogue inputs and binary outputs 26

3.1. Introduction 26

3.2. Description of multi-purpose signal evaluation and reception 26

3.2.1. Analogue input 26

3.2.2. Binary output 26

3.2.3. I/O signals inside CDA70 27

3.2.4. I/O signals parameters 28

3.3. Measuring other CDA70 signals 28

3.3.1. Measuring the supply voltage 28

3.3.2. Measuring internal CDA70 temperature 29

3.3.3. Measuring DSR output signal level 29

3.4. Output signal for disconnection of supply voltage 30

3.5. Technical parameters 30

3.6. Setting CIO parameters 30

3.6.1. Activation of CIO signals 30

3.6.2. CIO communication parameters 30

3.6.3. CIO active mode parameters 31

CONTENTS

3.7. Connecting CIO signals to user device 32

4. Reference 34

5. Links to related products of the manufacturer 34

5.1. Systems 34

5.2. Protocols 34

5.3. Software 34

5.4. Products 34

6. Complaints procedure 35

7. Warranty 37

Used symbols

Danger – important notice, which may have an influence on the user’s safety or the function of

the device.

Attention – notice on possible problems, which can arise to in specific cases.

Information, notice – information, which contains useful advices or special interest.

Conel s.r.o., Sokolska 71, 562 04 Usti nad Orlici, Czech Republic

Issue in CZ, 12/13/2007

SAFETY INSTRUCTIONS

1. Safety instructions

Please observe the following safety instructions:

•The communication module has to be used in accordance with all applicable international

and national laws or any special regulations that may govern its use for particular

applications and devices.

•Use only the original Conel company accessories. Thus you will prevent possible health

risks and damage to the devices and ensure compliance with all relevant provisions.

Unauthorised adjustments or use of unapproved accessories may result in damage to the

module and breach of applicable laws. Use of unapproved adjustments or accessories

may lead to cancellation of guarantee, which has no effects on your legal rights.

•Voltage on the communication module supply connector shall not be exceeded.

•Do not expose the communication module to extreme conditions. Protect it from dust,

moisture and heat.

•It is recommended not to use the communication module at petrol stations. We remind

users to observe the limitations of radio devices use at pump stations, chemical plants or

where explosives are being used.

•You have to be extremely careful when using the communication module in proximity to

medical devices, such as pacemakers or hearing aids.

•It is recommended to create a proper copy or backup of all the important settings saved

in the device's memory, to database by help program Radwin, reference [1].

CDA70 MODEM DESCRIPTION

2. Description of the CDA70 radio modem

2.1. General

The CDA70 radio modem is a device for wireless data transmission. Communication

between two radio modems is a simplex one and is carried out on a single frequency. Modems

work in frequency band of 143 to 174 MHz (CDA70V) and 403 to 470 MHz (CDA70U).

Transmission rate is 21.7 kbit/sec when using the FFSK modulation and channel spacing 20

and 25 kHz or 10.8 kbit/sec when using channel spacing 12.5 kHz. Transmission rate is 10.8

kbit/sec when using the GMSK modulation and channel spacing 20 and 25 kHz or 5.4 kbit/sec

when using channel spacing 12.5 kHz. Transmission power output of the radio modem is

adjustable from 10 mW to 5 W.

The CDA70 radio data modem is controlled by a 32-bit communication processor

providing communication on the radio channel and individual interfaces. The CDA70 modem

has four serial data interfaces (communication ports) and one with direct attachment

of input/output peripherals for data collection and CIO technological process control. It is

possible to set transfer parameters and communication protocol separately for each port.

As a result, you may use the radio modem to communicate with various user interfaces using

different communication protocols on the serial interface.

The communication protocol used for communication between modems on the radio

channel provides for access of the modem to the radio channel, collision solving,

retranslations and other functions necessary for cooperation of modems within a radio data

network. It allows creating of a large network on a single radio channel and independent

operation of multiple radio networks on a single frequency. The radio data modem CDA-70 is

possible to use in combination with other modems of the system AGNES. Description

of the system AGNES is in reference [2].

2.2. Examples of possible applications

•Security systems

•Telematics

•Telemetry

•Vending and dispenser machines

2.3. Description of individual components

2.3.1. Radio component

Working frequency of the radio component is synthetizer-controlled separately for

reception and transmission. It is tuneable within a broad frequency band (see Technical

parameters table). Several levels of the radio module transmitter power output can be set

(from 10 mW to 5 W). The controlling microcomputer program controls setting of the working

frequency and transmitting power output. The radio module supplies the microcomputer

with information on the radio signal level being received (RSSI – Received Signal Strength

Indicator). This information is used for measuring of the signal strength between individual

nodes of the radio network.

CDA70 MODEM DESCRIPTION

2.3.2. Modem component

The modem part converts digital bit flow from the microcomputer to the FFSK or GMSK

analogue modulation, which is brought to the transmitter of the radio data module. And vice

versa, it converts analogue signal from the receiver to digital bit flow to the microcomputer.

The modem part is designed on the basis of a CML integrated circuit.

2.3.3. Microcomputer

The base of the radio data modem controlling microcomputer is represented by a 32-bit

processor with 1 MB of RAM, 512 kB of FLASH ROM and real time clock circuit with a back-up

power supply.

On one side, the microcomputer is connected to the radio data module via the modem

component; on the side of user interface, it is connected to circuits generating signals within

the RS232, RS485, MBUS or Ethernet standard levels. The microcomputer provides for

connection of up to four user interfaces. All ports are terminated by RJ45 connectors marked

PORT1, PORT2, PORT3 and ETH. All RS232 ports are protected against overvoltage

incoming via data cable. If a device with RS485 interface is to be connected, a level converter

suitable for the appropriate application can be connected to the serial port. Different converters

will be used in case of connection on a short distance or in case galvanic separation is

necessary. The modem's microcomputer can be set for necessary control of the converter

(RS485). To each interface, a device with different communication protocol can be connected -

i.e. the microcomputer can also work as a converter of protocols between individual serial

ports. The wide range of radio modem functions can be set via any of RS232 communication

ports. In addition, the microprocessor manages numerous functions of servicing

and installation purposes. Apart from other important information, the microcomputer memory

records data transmission statistics, strength of signals from individual radio modems,

statistics of communication on individual serial ports, power failures, voltage of backup power

source and temperature inside the radio data modem. See Service manual for description

of service functions.

Configuration of the CDA70 radio data modem is stored in the permanent FLASH ROM

memory. See the Configuration of radio modem chapter for description of its settings.

2.3.4. Inputs and outputs for telemetry

As an option, customers may wish to install inputs and outputs for data collection

and controlling of technological processes in the radio modem. These signals are then led

to an RJ45 connector marked I/O. Five signals are led to this connector. Each of them can be

used either as input or output. Input is analogue 0 to 5V or digital with adjustable threshold.

The output is an open collector able to switch up to 500 mA. Reading and control of I/O signals

is possible both via the radio data network and from any serial RS232 interface. Two radio

data modems can make up a simple technology control, where changes on one modem input

signals can control remote output signals of the other modem and vice versa.

For multi-purpose usage, we supply an interface between the I/O connector

and the technology providing configurable voltage and current inputs, inputs for resistance

measurement (thermometers, barometers etc.), binary inputs with optical isolation and relay

CDA70 MODEM DESCRIPTION

outputs. With the equipment you may establish simple telemetry at low cost, without the use

of industrial control automat.

2.3.5. User interface protocols

For user interface, a range of standard protocols is implemented:

•AT modem

•PROFIBUS

•MBUS

•MODBUS

•Asynchronous transparent line

•Transparent bus

•Sauter

•IWKA

•SBUS

•RADOM

•RDS

New protocols, currently not supported by the radio modem, can be implemented

according to the customer's needs.

CDA70 MODEM DESCRIPTION

2.3.6. Technical parameters

Frequency band 143 – 174 MHz (CDA70V version)

403 – 470 MHz (CDA70U version)

Adjustment of working frequency program

Adjustment of working frequency of

receiver and transmitter separate for each part

Adjustment of channel spacing 12.5, 20 and 25 kHz – program

Output power 10 mW to 5W – program setting

Receiver sensitivity for 10 dB SINAD -100 dBm FFSK

-105 dBm GMSK

Reception / transmission switching time < 4 msec

Maximum transmission rate 21.7 kbit/sec for channel spacing of 20 and 25 kHz

10.8 kbit/sec for channel spacing of 12.5 kHz

Type of modulation FFSK, GMSK

Radio modem

complies with

standards:

Radio parameters

EMC

Power safety

ETSI EN 300 113-2 V1.1.1:2002

EN 301 489-5:2001, EN 55022:2001,

EN 61000-3-2:2001

EN 60 950:2001

Temperature range Operation

Storage -20 °C to +55 °C

-40 °C to +85 °C

Supply voltage (car dashboard) +10.8 to +15.6V DC

Current Reception

Transmission 5 W

Stand by

190 mA

1500 mA

25 mA

Dimensions 43x104x98 mm (DIN35 attachment to board)

Weight 600g

Antenna connector BNC – 50 Ohm

User interface PORT1

PORT2

PORT3

ETHERNET

I/O

See. chapter 2.5.1

See. chapter 2.5.2

See. chapter 2.5.3

See. chapter 2.5.4

See. chapter 2.5.5

CDA70 MODEM DESCRIPTION

2.4. Radio modem status indication

Seven LED status indicators informing of the radio data modem status are located

on the front panel. They are arranged in three arrays:

Colour Group Meaning

GREEN PWR

Flashing once a sec………..proper function

Flashing 10 times a sec. ……...power of radio module off

Permanently on ...... error

Permanently off ..... no power +12V

Double flashing …. data reception on VF channel, level <-

100dBm

RED TX Modem is sending data to radio channel

YELLOW RX Receiving synchronisation or data from radio channel

GREEN

RF DATA Data received from radio channel are intended for this

modem

RED TX Transmission to one of serial ports (PORT1 ... PORT3, ETH)

GREEN

PORT1-

PORT3,

ETH DATA Modem is receiving correct data from one of serial ports

(PORT1 .. PORT3, ETH)

2.5. User interfaces (connectors)

The rear panel of the radio modem contains up five RJ45 connectors. Four data

interfaces are labelled PORT1, PORT2, PORT3 and ETH. The fifth connector with I/O label is

intended for direct connection of inputs/outputs for data collection and technology control. The

technology control and data collection can be supplied as an optional accessory upon request

of the customer.

CDA70 MODEM DESCRIPTION

2.5.1. Connection of PORT1, PORT2 and PORT3 connectors (RS232)

(RS232 – DCE – Data Communication Equipment)

number Signal

mark Description Data flow direction

1 RTS Request To Send Input

2 CTS Clear To Send Output

3 DTR Data Terminal Ready Input

4 DSR Data Set Ready - connected to +12V through 560

Ohm resistor Output

5 GND GROUND - signal ground

6 RXD Receive Data Output

7 CD Carrier Detect Output

8 TXD Transmit Data Input

Circuit example of the meter with modem CDA70:

Circuit example of the PC with modem CDA70:

•the cable KD2 is connected to serial PC port (example COM1)

Circuit example of the RS232 equipment with modem CDA70:

Modem CDA70

Cable KD-2 PWR

CIO

PORT3

PORT2

PORT1 ETH

Modem CDA70

PWR

CIO

PORT3

PORT2

PORT1 ETH

Cable KD-2

Pin 1 – RTS

Pin 2 – CTS

Pin 3 – DTR

Pin 4 – DSR

Pin 5 – GND

Pin 6 – RXD

Pin 7 – CD

Pin 8 – TXD

Modem CDA70

Meter

CDA70 MODEM DESCRIPTION

2.5.2. Connection of PORT1 connectors (MBUS)

Panel socket RJ45

number Signal

mark Description Data flow direction

1 SGND Signal and supply ground

2 SGND Signal and supply ground

3 TxRx- MBUS B (-) Input/Output

4 TxRx+ MBUS A (+) Input/Output

5 TxRx- MBUS B (-) Input/Output

6 TxRx+ MBUS A (+) Input/Output

7 +12V EXT External power supply +10,8 ÷ +15,6V

8 +12V EXT External power supply +10,8 ÷ +15,6V

ATTENTION! External supply is for converter MBUS!

The converter must have external power supply because of galvanic separated.

Circuit example of the meter with modem CDA70:

Pin 1 – SGND

2.5.3. Connection of PORT2 connectors (RS485G)

Panel socket RJ45

number Signal

mark Description Data flow direction

1 GND Signal and supply ground

2 GND Signal and supply ground

3 TxRx- RS485 B (-) Input/Output

4 TxRx+ RS485 A (+) Input/Output

5 TxRx- RS485 B (-) Input/Output

6 TxRx+ RS485 A (+) Input/Output

7 +12V EXT External power supply +10,8 ÷ +15,6V

8 +12V EXT External power supply +10,8 ÷ +15,6V

ATTENTION! External supply is for converter RS485G!

The converter must have external power supply because of galvanic separated.

Pin 2 – SGND

Pin 3 – MBUS (-)

Pin 4 – MBUS (+)

Pin 5 – MBUS (-)

Pin 6 – MBUS (+)

Pin 7 – +12V EXT

Pin 8 – +12V EXT

Modem CDA70

Meter

CDA70 MODEM DESCRIPTION

Circuit example of the meter with modem CDA70:

2.5.4. Connection of ETH connectors (ETHERNET)

Panel socket RJ45

number Signal mark Description Data flow

direction

1 TXD+ Transmit Data Input/Output

2 TXD- Transmit Data Input/Output

3 RXD+ Receive Data Input/Output

4 DNC ---

5 DNC ---

6 RXD- Receive Data Input/Output

7 DNC ---

8 DNC ---

ATTENTION! Port ETH is not with POE (Power Over Ethernet) compatible!

Circuit example of the CDA70 with to equipment with Ethernet:

Modem CDA70

UTP cable PWR

CIO

PORT3

PORT2

PORT1 ETH

Pin 1 – SGND

Pin 2 – SGND

Pin 3 – RS485 (-)

Pin 4 – RS485 (+)

Pin 5 – RS485 (-)

Pin 6 – RS485 (+)

Pin 7 – +12V EXT

Pin 8 – +12V EXT

Modem CDA70

Meter

CDA70 MODEM DESCRIPTION

2.5.5. Connection of I/O connector

Panel socket RJ45

number Signal mark Description Data flow

direction

1 I/O 5 Input/Output - analogue or binary input or binary