I Link Communication; Overview; O/I Link Communication Settings - IDEC MICRO/I HG4G-CJT22 F-B Series User Manual

2 O/I Link Communication

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 Device 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.
O/I Link Communication
Numerical Display
Reference Device Address: D1
Bit Button
Destination Device Address: M1
O/I Link Communication can only be used for the External Device Communication 1. The
communication driver of O/I Link Slave should match the O/I Link Master's.
For details regarding the O/I Link Communication, refer to Chapter 3 "O/I Link Communication" in the
WindO/I-NV4 External Device Setup Manual.
• Use the runtime system version 4.01 or later when connecting the HG5G/4G/3G/2G-V, HG4G/3G, HG2G-
5F/-5S/-S, HG1G/1P via O/I Link Communication.
• The HG5G/4G/3G/2G-V, HG4G/3G, HG2G-5F/-5T, HG1G/1P and the HG4F/3F/2F/2S/1F use a different
protocol for the O/I Link Communication. To communicate them via the O/I Link Communication, select
the Use the same O/I Link Communication as the HG4F/3F/2F/2S/1F check box on the
Compatible tab of the Project Settings dialog box.

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 Function under Interface Settings on the Communication Interface tab. For details, refer to Chapter 4 "3.5
O/I Link Tab" on page 4-53.
HG5G-V HG4G-V
MICRO/I
O/I Link Master
Device Link Communication
Read
Write
Read Write
5678
MICRO/I
O/I Link Slave
(Slave 1)
WindO/I-NV4 User's Manual
HG4G HG3G-V HG3G HG2G-V HG2G-5F
External device
Read Write
MICRO/I
O/I Link Slave
(Slave 2)
2 O/I Link Communication
HG2G-5T HG1G HG1P
D1: 5678
0 1
M1:
Read Write
MICRO/I
O/I Link Slave
(Slave 15)
3-3
3