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
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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
1
DCD
Data carrier Detect
2
RX
Receive Data
Output
Tx data to PC unit
3
TX
Transmit Data
Input
Rx data from PC unit
4
DTR
Data Terminal Ready
5
GND
Ground
/
Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
Input
Not used
8
CTS
Clear To Send
Output
Not used
9
RI
Ring Indicator
Input
1
5
6
9
9 PINS CONNECTOR
(female)
View of the connector fitted on the
WIZ2 module
