AUREL WIZ2-434 User manual
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
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
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
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
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
1
3
4
5
6
2
7
8
9
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
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
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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
MASTER
ADDRESS=0
SLAVE
SLAVE
ADDRESS=8
<H→R
<H←R
8,<H→R
8,<H←R
N.B.: H→→R: Host→→Remote communication
H
←←
R: Remote
→→
Host communication
The remote connected unit does not repla
y
with the consignee’s address placed at the
head of the packet
1
2
3
4
5
6
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
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
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.
REGISTER’S
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
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
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).
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 11 of 14
The register’s contents may be changed by entering the command:
# 3 <new_value>
To read the register’s contents the command sequence is:
$ 3
For the programming procedures please refer to para.: 3.3
Note:
It is suggested to verify, in advance, the RS232 characteristics of the unity connected to the WIZ2 module
and to adequately programme such register.
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 12 of 14
4. Programming Jumpers
To reach the 3 programming jumpers carefully remove the front cover of the box (RSB model).
By closing JP3 from DATA MODE (data transreceiving ) the system switches to PROGRAMMING MODE.
Data speed JP1 JP2
9600 b/s OO
19200 b/s XO
57600 b/s OX
115200 b/s XX
X= closed jumper
O= open jumper
In the original configuration all the jumpers are open (DATA MODE, 9600 b/s).
Programming jumpers
JP1
JP2
JP3
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 13 of 14
APPENDIX A: CONNECTIONS
A.1 RS232 SERI AL CONNECTI ON
The WIZ2 modules converse with external devices through a 9 pins RS232 serial interface.
The handshaking signals between connected units, with an RS232 protocol, are not utilized by WIZ2
modules.
During the via cable programming phase, (para. 3.3) the RTS and CTS lines are used.
The connection cable with the master unit must be pin-to-pin, the one connected with the remote unit, could
be null-modem (see A.2)
Pin Signal (PC) I nput/ Output (WI Z2) Usage in WI Z2
1DCD Data carrier Detect
2RX Receive Data Output Tx data to PC unit
3TX Transmit Data Input Rx data from PC unit
4DTR Data Terminal Ready
5GND Ground /Ground
6DSR Data Set Ready
7RTS Request To Send Input Not used
8CTS Clear To Send Output Not used
9RI Ring Indicator Input
1
5
6
9
9 PINS CONNECTOR
(female)
View of the connector fitted on the
WIZ2 module
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 14 of 14
APPENDI X B: MASTER AND SLAVE MODULES; THEIR USE IN
A POLLI NG TYPE QUESTIONING SYSTEM
In a polling system the unity connected to the master module administrates the slaves’ questioning
sequence, deciding the timing and the addresses of the remote units to be monitored. The master system
must divide the time in slots assigned to each slave module, considering a maximum time within which, is
assumed, the reply, from the remote unit, is back.
The WIZ2 modules are programmed with a software address which identifies them inside the system only.
n SLAVES
MASTER
T
. . .
SLAVE 1
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