AUREL WIZ2-434 Bedienungsanleitung

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 1of 14

http://www.aurel.it -email: lab-[email protected]

Single channel data transceiver module WIZ2-434

Available models:

•WIZ2-434-RS: data input by RS232 (±12V) logic, 9-15V supply

•WIZ2-434-RSB: same as above , but in a plastic shell.

The WIZ2-434-x modules are intelligent transceivers that support a digital data packet transfer of any length

(1-96 bytes).

The data transferred to the remote unit are error-free since, at the arrival, are verified and confirmed.

•Half-duplex serial connection with RS232 protocol, with a speed range programmable (9600, 19200,

57600, 115200 b/s)

•Data’s packet length: 1-96 bytes

•Packet validity control at the reception

•RF connection through a 433.92 MHz band

•2FSK modulation

•Status LED (Power ON, TX, RX)

•It complies with ETSI 300-220 regulations

•9-15 V power supply

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 2of 14

http://www.aurel.it -email: lab-[email protected]

TABLE OF CONTENTS

•INTRODUCTION

•1. WIZ2-434-RS MODULES LAYOUTS

•2. ADDRESSING

•2.1 CONVERSATION ADMINISTRATION BETWEEN UNITS.

•2.2 MASTER AND SLAVE MODULES: SUMMARY

•3. PROGRAMMING

•3.1 WRITE

•3.2 READ

•3.3 PROGRAMMING PROCEDURE

•3.4 REGISTERS

•3.4.1 ADDRESS ($00)

•3.4.2 RS232 ($03)

•4. PROGRAMMING JUMPER

•APPENDIX A: CONNECTIONS

•A.1 RS232 SERIAL CONNECTION

•APPENDIX B: MASTER AND SLAVE MODULES; THEIR USE IN A POLLI NG TYPE

QUESTIONING SYSTEM

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 3of 14

http://www.aurel.it -email: lab-[email protected]

Introduction

WIZ2-434-x modules allow to connect, via radio, two or more units; they supply a complete radio frequency

system, by integrating receiver, transmitter and antenna and by indipendently administrating a low level

packaging of the data sent from a control unit (for instance a Personal Computer), and the managing

functions of the radio link interconnection.

They are supplied by a voltage ranging from 9 to 15V.

A 96 bytes maximum length data packet can be sent to the transmitter module by a personal computer; the

data to be transmitted are memorized in an input buffer and forwarded to the remote connected WIZ2

module, to which are addressed.

The packet received by the WIZ2 module will be decoded, stored in the reception buffer and, in case,

confirmed. It shall be forwarded, then, to the downstream connected unit, through a serial port.

The WIZ2 modules bear a polling system where a master unit can address up to 255 slave units.

The host personal computer dispatches, to the WIZ2 module, the data preceded by an address byte of the

remote module; the data exchanging administration unit adds the preamble and error control bytes.

HOST PC

WIZ2-master WIZ2-slave

REMOTE Units

TX/RX

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 4of 14

http://www.aurel.it -email: lab-[email protected]

1. Lay-out

The WIZ2-434-RS model foresees a 9-15V voltage range, supplied to the DC (1) connector and signals in

RS232 logic on the female, 9 pins D (2) connector.

19-15V DC supply connector (internal Vcc,

external GND)

6Microcontroller

2RS232, female, 9 pins, D type, connector 7POWER signalling LED

3Programming jumper 8TX signalling LED

4ICP jumper (I n Circuit Programming) 9RX signalling LED

55V voltage stabilizer

WIZ2-434-RS

XTR-434

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 5of 14

http://www.aurel.it -email: lab-[email protected]

2. Addressing

The WIZ2 modules are conceived to be applied in a master–slave system (255 maximum slave number). The

distinction between master and slave units is of software type, according to the address contained in the

ADDRESS register:

•ADDRESS = 0: system’s MASTER module;

•ADDRESS = 1 –255: SLAVE module.

The system must always have a master module programmed with a 0 address.

The microcontroller fitted inside the WIZ2 modules, administrates the packing of the data entering from port

RS232; the data package addressing to be transmitted is carried out by the external system requiring the

connection with a remote unit. The addressing byte must be placed before the data bytes.

TO MASTER MODULE

DESTINATION MODULE

ADDRESS

DATA BYTES

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 6of 14

http://www.aurel.it -email: lab-[email protected]

2.1 Conversation administration between units

Illustrated here below is the addresses management procedure in a master–slave conversation. In this

specific example reference is made to slave module with 8 address:

1. The data’s addressing administration is entrusted to the system placed upstream the WIZ2 master

module: the communication administrator must place, before the data packet bytes, a byte containing the

address of the WIZ2 module destination.

2. The master module transmits the ‘redundancy + address + data’ packet, via radio channel.

3. The packet is received by the slave module and checked out: if considered acceptable by the WIZ2

remote module, it is then forwarded to the unit connected to it, reproducing the original data string without

the front placed address.

4. If the data sent by the master were, for instance, a command foreseeing a reply from the remote unit,

the returning data packet shall then be forwarded to the WIZ2 master module.

5. This unit (an industrial PC or a sensor, for instance) IS NOT BOUND to place, at the head of the data’s

packet, the address of the unit that originated the interrogation (the master): the slave module shall care to

place its own address at the head of the data packet (*).

6. The master module, at the reception, of the data packet via radio, DOES NOT CANCEL the byte of the

remote module’s address, and sends downstream all the received data’s bytes: this function appears to be

particularly useful in polling systems ambient, where, a reply data packet, can reach the questioning unit in

different delays.

8,<H→R

8,<H←R

MASTER

ADDRESS=0

SLAVE

ADDRESS=8

<H→R

<H←R

8,<H→R

8,<H←R

N.B.: H→→R: Host→→Remote communication

←←

R: Remote

→→

Host communication

The remote connected unit does not repla

with the consignee’s address placed at the

head of the packet

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 7of 14

http://www.aurel.it -email: lab-[email protected]

This procedure is good for WIZ2 modules’ use in the industry, where PLCs can be instructed to operate on

machines or questioned to monitor sizes. Being not equipped with the adequate logic, in order to handle the

data string that composes the answer to a possible interrogation, the WIZ2 remote module places,

therefore, at the head of the data from the PLC, its own address so to avoid that the so originated packet, is

understood, from the other slave modules present in the system, as a command coming from the master

module (the head placed address shall cause the reply rejection from all other users of the system, taking

into consideration the unique addressing).

(*) this device will avoid that a reply packet coming from a slave module, is understood, by an other slave

module as its own, in case the address starts with the same 1st byte of the data packet.

Note:

The destination module address is shown as a binary value.

For instance: the value ‘4’ has to be understood as an integer number (binary configuration 00000100) and

not as an ASCII type “4” which corresponds to a decimal value 52 whose binary configuration is 00110100.

It is suggest to pay attention to the conversion between decimal values and ASCII types.

The WIZ2 “packing system” does not utilize sequences of escape types, therefore it places, at the user

disposal, the 256 combinations of the ASCII 8 bits coding.

Before sending a new data packet to the serial gate it is necessary to wait till the previous packet’s RF

transmission is over. All data entering the serial gate during the RF transmission forwarding phase, are

bound to be irremediably lost.

It is therefore suggested to the User that, during the administration software writing, to pay very much

attention to a correct timing of the data packets going out from the PC’s serial gate, specially when the

packets’ length is variable. Infact, if it is decided to forward a long packet followed by a short one, it is

necessary to wait all the time required by the RF transmission of the long packet before sending, to the

serial gate, the short one.

The packet's RF transmission time T is given by:

T = 3.6 mS + (NumByte+2) x 0.156 mS

Example #1 -Packet lenght: 1 Byte

Transmission time T= 4.1 milliseconds

Example #2 -Packet lenght: 32 Byte

Transmission time T= 8.9 milliseconds

Example #3 -Packet lenght: 96 Byte

Transmission time T= 18.9 milliseconds

It is suggested to add, precautionally, few mS to the RF transmission time between the dispatch of a packet

and the subsequent one.

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 8of 14

http://www.aurel.it -email: lab-[email protected]

2.3 MASTER AND SLAVE MODULES: ( SUMMARY)

MASTER SLAVE

It places the address at the head of the data packet

→→ RF

No Yes

It removes the address from the data packet head

→→ RS232

No Yes

It verifies the destination address No Yes

It verifies the checksum Yes Yes

Internal address 0≠0

3. Programming

The WIZ2 modules may be programmed through the serial port, by closing the jumper 3 and supplying,

subsequently, the module.

The programming mode foresees to enter a WRITE or READ type command.

Here below is reported the list of the registers, their addresses and functions.

NAME

ADDRESS

FunCTion DEFAULT

ADDRESS $00 WIZ2 module’s address $00

RS232 $03 RS232 protocol options:

00: no parity

01: odd parity

02: not in use

03: even parity

$00 (no parity)

3.1 WRI TE

The WRITE command enters a value in a register of the microcontroller’s internal EEPROM, contained in the

WIZ2 module.

Format:

#_<address_register>_<value_register>

The programming string is composed by a 3 bytes sequence:

•‘#’: ASCII type $23 which enables the microcontroller to receive a command of a register writing.

•<address_register>: is the register’s address to be written

•<value_register>: is the register’s new value

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 9of 14

http://www.aurel.it -email: lab-[email protected]

Note:

<address_register> and <value_register> have to be intended as binary values. For instance: the value ‘4’

has to be understood as an integer number (binary configuration 00000100) and not as an ASCII type “4”

which corresponds to a decimal value 52 whose binary configuration is 00110100.

It is suggest to pay attention to the conversion between decimal values and ASCII types.

The WIZ2 “packing system” does not utilize sequences of escape types, therefore it places, at the user

disposal, the 256 combinations of the ASCII 8 bits coding.

3.2 READ

The READ command reads the register’s value of the microcontroller’s internal EEPROM, contained in the

WIZ2 module.

Format:

$_<address_register>

The programming string is composed by a 2 bytes sequence:

•‘$’: ASCII type $24 which enables the microcontroller to receive a command of a register reading

•<address_register>: is the address of the register to be read.

Note:

<address_register> has to be intended as a binary value. For instance: the value ‘4’ has to be understood as

an integer number (binary configuration 00000100) and not as an ASCII type “4” which corresponds to a

decimal value 52 whose binary configuration is 00110100.

It is suggest to pay attention to the conversion between decimal values and ASCII types.

The WIZ2 “packing system” does not utilize sequences of escape types, therefore it places, at the user

disposal, the 256 combinations of the ASCII 8 bits coding.

3.3 PROGRAMMI NG PROCEDURE

The module programming, takes place by closing the jumper 3 before supplying the module.

The data packet containing the programming word shall not be forwarded to the remote module.

The programming procedure takes place at the speed set by the jumpers 1 and 2, and at the correct parity.

The WIZDEMOx software is pre-set at a 9600 b/s speed without parity bits.

3.4 REGI STERS

Here below is reported the list of the registers utilized for the WIZ2-434-x modules and their functions.

WIZ2-434

Instruction Manual

Technical features are subject to change without notice. AUR°EL S.p.A does not assume responsibilities for any damage caused by the device’s misuse.

AUR°EL S.p.A. Via Foro dei Tigli, 4 -47015 Modigliana [FC] –ITALY Rev. D, 31-01-2003

Tel.: +390546941124 – Fax: +390546941660 Page 10 of 14

http://www.aurel.it -email: lab-[email protected]

3.4.1 ADDRESS ($00)

The ADDRESS module contains the WIZ2 module’s address.

It corresponds to the location $00 of the EEPROM memory of the microcontroller.

The values contained in the register could be:

•0: the unity is the MASTER of the system

•1-255: the unity is a SLAVE of the system

The value of this register, at the reception of a data packet, via RF, is compared with the first entering byte:

if the two values are the same, the packet is considered effectively addressed to this WIZ2 unit.

A WIZ2 slave module places its own address before the data packet that has to be transmitted via radio.

The default value of the ADDRESS register is $00.

The register’s contents can be changed by entering the command :

# 0 <new_value>

To read the register’s contents, the command sequence is:

$ 0

For the programming procedures refer to para.: 3.3 -3.4

3.4.2 RS232 ($03)

The RS232 register defines the settings of the parity of the RS232 transmission.

The allowed values are:

•00: no parity

•01: odd parity

•02: not in use

•03: even parity

It corresponds to the location $03 of the microcontroller’s EEPROM memory.

In detail, the setting values correspond to those taken from the first two bits of the register according to the

logic:

•RS232(0)= PARITY (0: no parity; 1: parity)

•RS232(1)= ODD (0: odd parity; 1: even parity)

The odd parity, for example, takes up the value b11 in register $03.

The default value of the RS232 register is $00 (no parity).

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