eWON Family - eWON Support
eWON Family - eWON Support
eWON Family - eWON Support
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5.14 HITACHI IO Server<br />
5.14.1 Introduction<br />
General Reference Guide IO Servers Configuration<br />
The Hitachi IOServer allows the <strong>eWON</strong> to poll tags belonging to a HITACHI EH series PLC using its serial link or Ethernet interface.<br />
<strong>eWON</strong> uses standard H protocol (for serial RS232), station number H protocol (for serial RS485), and Ethernet H-protocol (for Ethernet).<br />
No remote maintenance functionality is provided by this IO server.<br />
5.14.1.1 Setup<br />
5.14.1.1.1 COM configuration<br />
Figure 104: HITACHI IOServer: COM setup<br />
Parameter Description<br />
Baud Rate<br />
Speed of the Serial port.<br />
Available speeds are 1200, 2400, 4800, 9600, 19200 Bauds or disabled<br />
Parity The parity to apply (None / Even / Odd)<br />
Databits The number of bits in data (7 or 8)<br />
Stop bit(s) The number of Stop bits (1 or 2)<br />
Choose the Hardware mode of communication:<br />
• Ful Duplex HW handshaking (by default)<br />
HW mode<br />
• Full Duplex NO handshaking<br />
• Half duplex<br />
Reply Timeout Maximum time the <strong>eWON</strong> will wait for a valid message response<br />
Table 113: HITACHI IOServer: COM parameters<br />
The <strong>eWON</strong> implements Transmission Control Procedure 1 (One way activation Control Procedure).<br />
When half-duplex mode is used (RS485), the <strong>eWON</strong> acts as master. So, no other master may be on the bus (eg: control panel or host).<br />
RG-001-0-EN ver 1.6 <strong>eWON</strong>® - 22/06/2009 - ©ACT'L sa Page 135