DS41
DATALOGIC
2.20 - Installation
2.7.3 Auxiliary RS232 interface
The auxiliary serial interface is used exclusively for RS232 point to point
connections.
The parameters relative to the auxiliary interface (baud rate, data bits, etc.)
as well as particular operating modes such as local echo can be defined
using the WINHOST utility program or Host Mode programming. For more
details refer to paragraph 2.9 and to the section "Auxiliary Interface Menu" in
the WINHOST Help On Line.
The following pins of the 25-pin connector are used to connect the RS232
auxiliary interface:
Pin
Name
Function
20
RXAUX
Auxiliary input
21
TXAUX
Auxiliary output
23
CTSAUX
Auxiliary handshake
24
RTSAUX
Auxiliary handshake
7
SGND
Signal Ground
7
SGND
SGND
DS41
USER INTERFACE
TXD
RXAUX
20
RXD
TXAUX
21
RTS/CTS HARDWARE HANDSHAKING ENABLED
DCD
RTSAUX
24
DTR
CTSAUX
23
Figure 2.22 - RS232 auxiliary interface connections
The RTSAUX and CTSAUX signals control data transmission and
synchronize the connected devices. If the RTS/CTS handshaking protocol is
enabled, the DS41 activates the RTSAUX output to indicate a message is to
be transmitted. The receiving unit activates the CTSAUX input to enable the
transmission.