Eaton XN-1RS232 User Manual

2 Integrating the Module in PROFIBUS-DPPROFIBUS-DP data image24 XI/ON: XN-1RS232 09/2011 MN05002013Z-EN www.eaton.comTable 8: Meaning of the data bits (process output):Designation Value DescriptionRXBUF FLUSH 0 - 1 The RXBUF FLUSH bit is used for clearing thereceive buffer.If STATRES = 1:A request with RXBUF FLUSH = 1 will beignored.If STATRES = 0:RXBUF FLUSH = 1 will clear the receive buffer.TXBUF FLUSH 0 -1 The TXBUF FLUSH bit is used for clearing thetransmit buffer.If STATRES = 1:A request with TXBUF FLUSH = 1 will beignored.If STATRES = 0:TXBUF FLUSH = 1 will clear the receive buffer.STATRES 0 - 1 The STATRES bit is used for resetting the STATbit of the process input data.The STAT bit is reset (from 0 to 1) with the tran-sition from 1 to 0 (falling edge).If this bit is 0, all changes in the data fieldsTX_BYTE_CNT, TX_CNT and RX_CNT_ACK areignored. The clearing of the receive and transmitbuffer by RXBUF FLUSH/TXBUF FLUSH ispossibleThe value 1 or the transition from 0 to 1 disablesthe clearing of the receive and transmit buffer bythe RXBUF FLUSH/TXBUF FLUSH.RX_CNT_ACK 0 - 3 The value RX_CNT_ACK is a copy of the valueRX_CNT. The value RX_CNT was transferredtogether with the last data segment of theprocess input data.The value RX_CNT_ACK is an acknowledge-ment of successful acceptance of the datasegment using RX_CNT.