RS-USBX user manual - 2009/03/16
SP09002
Page 3 of 12
1 INTRODUCTION
1.1 PRODUCT FEATURES
RS-USBX is a programmable serial PC interface for connecting a PC to a serial line with the following
communication standards:
–
RS485 (half-duplex)
–
RS422 (full-duplex)
–
TTL (full-duplex)
The serial connection is allowed by means of a D-sub 9 pin female connector (see § 4.2.1). Appropriate links on
the connector allow to insert the 120 Ω termination for RS485 or RS422 lines.
Working in RS485 or RS422 is mutually exclusive and should be set with the appropriate software option. TTL
connection is always available.
The line driving for the RS485 half-duplex communication is automatically carried out by the interface.
The interface is equipped with a high-performance microprocessor that carries out all the communication tasks
and data buffering. The same microprocessor can optionally execute application software directly on the interface.
1.2 SOFTWARE
The installation CD contains the following software:
–
device drivers for Windows version 2000, XP and Vista;
–
libraries for interfacing the RS-USBX to Windows application programs;
–
two software tools for basic operations with RS-USBX;
–
firmware upgrade tool with a copy of the standard firmware module.
All software above will be automatically installed on the PC by executing the setup program contained into
the CD.
The following optional software is available on request:
–
embedded Modbus RTU master;
–
IEC 61131-3 runtime for writing application with the LogicLab development environment;
–
toolkit for C language firmware development.
1.3 SUPPLY
The standard supply includes:
–
the RS-USBX interface;
–
the CD with software drivers, software tools, code samples and documentation (user manual and
software programming manual);
–
USB cable.