IDEC High Performance Series - Manual (Page 105)

WindO/I-NV2 User’s Manual 3-3
2 O/I Link Communication
3
Communic
ation
2.1 Overview
O/I Link Communication is a protocol for communication between Master and Slave, where a MICRO/I connected to
the external device is configured as a Master and multiple MICRO/I (Slaves) communicate with the external device via
the Master.
The Master MICRO/I unit communicates with the external device by means of PLC Link Communication. The Master
MICRO/I is called an O/I Link Master and a slave MICRO/I connected to the O/I Link Master is called an O/I Link
Slave. A maximum of 15 O/I Link Slaves can be connected to an O/I Link Master.
2.2 O/I Link Communication Settings
These settings are configured under the O/I Link tab on the Project Settings dialog box. The Project Settings dialog
box can also be accessed using the following methods.
• Click Project on the Configuration tab.
• Double click Project Settings in the Project window.
The O/I Link Communication Settings can only be configured when O/I Link Master or O/I Link Slave is selected
in Protocol under Interface Settings on the Communication Interface tab. For details, refer to Chapter 4 “3.6
O/I Link Tab” on page 4-50.
2 O/I Link Communication
HG3G HG2G-5F HG2G-5S HG2G-S HG4G HG1F HG2F HG2S HG3F HG4F
Read Write
5678
MICRO/I
O/I Link Slave
(Slave 1)
MICRO/I
O/I Link Slave
(Slave 2)
MICRO/I
O/I Link Slave
(Slave 15)
MICRO/I
O/I Link Master
External device
0 1
Read
Write
D1:
M1:
5678
O/I Link Communication
PLC Link Communication
Numerical Display
Reference Device: D1
Bit Button
Destination Device: M1
Read Write Read Write
• The HG2G-S/-5S/-5F, the HG3G/4G, and the HG1F/2F/2S/3F/4F have different O/I Link Communication, therefore
they can not be connected on the same O/I Link Communication.
• The HG2S can only be used as a slave in O/I Link Communication.
• For details regarding the O/I Link Communication, refer to Chapter 3 "O/I Link Communication" in the
"External Device Setup Manual".
• O/I Link Communication is not available when selecting the HG2G-5S USB interface (Serial 2 in
Interface Configuration under Communication Interface tab on the Project Settings dialog box).
• The HG1F cannot simultaneously use Serial Interface 2 and the O/I Link Interface. The interface to use
is set in the Project Settings dialog box on the Communication Interface tab.
• The HG1F cannot use the O/I Link Interface when in the following states.
- The maintenance cable is connected to Serial Interface 2.
- In the Project Settings dialog box, on the Host I/F Driver tab, the Enable Pass-Through check box is
selected.