SAS 341-1, 1 x RS232, 1 x USB, incl. CD with handling blocks and manual; protocols: ASCII, 3964R, RK512, and loadable drivers (MMC)

The SAS 341 is a serial communication module for use in S7-300* systems. It allows the connection to the PLC of serial devices such as barcode scanners, operator terminals, serial printers, PCs, PLCs of other manufacturers and supports the protocols ASCII, 3964R, and RK512.
Serial devices can be connected with RS232 or RS422/RS485. The 9-pin Sub-D socket (15-pin with RS422/485) with standard pin assignment is provided for connecting the partner devices.
The additional USB device interface enables the connection of the PLC to PC systems, many of which have no conventional physical port. A virtual COM port driver enables the use of software that expects a COM interface.
The SAS 341 features advanced functions such as support for higher baud rates up to 115 kBaud, making it flexible without any loss of compatibility.
The linking of different PLC types of the S7-300* is flexibly implemented using the standardized RK512 computer link protocol.
The handling blocks supplied enable simple and flexible integration into the PLC. The module is parameterized in the hardware configurator of the PLC.

Note
To enable high integration density in the control cabinet, the SAS 341 is also available with 2 serial interfaces.
Both interfaces can be configured independently and used in the PLC.

SAS 341-1, with Modbus RTU driver
The driver addon "Modbus Master/Slave” enables communication with Modbus RTU-compatible devices. With this driver, the SAS 341 can operate either as a Modbus RTU master or Modbus RTU slave.
The driver is used for the SAS 341-1 with RS232 interface (700-341-1AH02) or for the SAS 341-1 with RS485 interface (700-341-1CH02).
With the RS232 interface, a point-to-point operation is possible, and with the RS485 interface, up to 32 participants can be addressed using the 2-wire half-duplex method.
In the communication with other systems, the Modbus RTU function codes 01, 02, 03, 04, 05, 06, 07, 08, 11, 12, 15, and 16 are supported.
The data exchange with the S7-CPU is in blocks in the supplied function blocks.