Quatech INTERBUS S manual Description of TTY, Function

RxDRxD

+ EXV- ￿FRQQHFWLRQ￿DQG￿D￿SDVVLYH￿ZLWK￿D￿￿PRGXOHFXUUHQW￿VRXUFH

Description of TTY:

The interface module is designed to operate with all WAGO I/O fieldbus couplers. The TTY interface module allows the connection of TTY-Interface devices to the WAGO I/O SYSTEM. The TTY Interface module can provide gateways within the fieldbus protocol. This allows serial equipment such as printers, barcode readers, and links to local operator interfaces to communicate directly by the fieldbus protocol with the PLC or PC Master.

This module supports no higher level of protocol. Communication is made completely transparent to the fieldbus allowing flexibility in further applications of the serial interface module. The communication protocols are configured at the Master PLC or PC.

The 128 byte input buffer provides for high rates of data transmission. When using lower rates of transmission speed you can collect the received data, with less priority, without loosing data.

The 16 byte output buffer provides for faster transmission of larger data strings.

FUNCTION

The data transmission takes place at 9600FXUUQWH￿baudVRXUFH(default value). 1 startbit,FXUU8HQWdatabits￿VRXUFH and 1 stopbit will be￿ZLWKtransmitted￿FXUUUHFLYHUHQW￿￿VRXUFHP$ . No parity is ￿￿￿availableP$ . The drivers are high ohmic￿￿￿P$. The control of data is made by the user software.

The TTY Interface is passive in sending and receiving , thus having no current sources. For data conversion an active partner is needed or an additional current source has to be connected.

					FXUUHQW￿￿￿P￿VRXUFH$				WUDQVPLWWHUUHFHLYHU
TxD	TxD	WUDQVPLWWHUFXUUHQW￿￿￿￿VRXUFHP￿ZLWK$	TxD	TxD		WUDQVPLWWHUUHFHLYHU	TxD+	TxD-
+	-		+	-

SRLQWRxD￿￿￿￿￿￿￿:+$*2ZLWKRxD- ￿WR￿DFWLYH￿SRLQWFRQFWLRQ￿SDUWQHUV￿ SDUWSRLW￿￿￿￿￿￿￿:xD+$Q*2RxDHUV-￿WR￿￿DQGSRLQW￿DGGLWLRQDO￿FRQQHFWLRQ￿FXUUHQW￿ZLWK￿￿SDVVLYVRXUFHV￿

RS232,TTY,RS485￿￿￿￿￿￿￿￿ 750-650,651,653 4

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿:$*2Ç,￿2Ç6<67(0