MATRIX 210™ REFERENCE MANUAL9066.4 RS232 MASTER/SLAVE(21x-x0x and 21x-x1x models)NOTEThis interface is provided for backward compatibility. We recommend usingthe more efficient ID-NET™ network for Master/Slave or Multiplexer layouts.The RS232 master/slave connection is used to collect data from several readers to build eithera multi-point or a multi-sided reading system; there can be one master and up to 9 slavesconnected together.The Slave readers use RS232 only on the main and auxiliary serial interfaces. Each slavereader transmits the messages received by the auxiliary interface onto the main interface. Allmessages will be passed through this chain to the Master.The Master reader is connected to the Host on the RS232/RS485 main serial interface.There is a single reading phase and a single message from the master reader to the Hostcomputer.In this layout the Master operating mode can be set only to Phase Mode.The Phase ON/OFF signals must be brought only to the Master. It is not necessary tobring them to the Slave readers.The main and auxiliary ports are connected as shown in the figure below.Figure 102 – RS232 Master/Slave LayoutHost1 231Master Main Serial Interface (Slaves RS232 only) Auxiliary Serial Interface (RS232) External Trigger2 1Slave#1 Slave#nPower
