IDEC High Performance Series - Manual (Page 109)

WindO/I-NV2 User’s Manual 3-7
5 User Communication
3
Communic
ation
5.1 Overview
User Communication allows you to develop a communication protocol to transmit and receive data from an external
device, such as a barcode reader.
User Communication is supported up to three interfaces of the MICRO/I, either serial, Ethernet, or USB interfaces.
5 User Communication
HG3G HG2G-5F HG2G-5S HG2G-S HG4G HG1F HG2F HG2S HG3F HG4F
External device
MICRO/I
Data reception Data transmission
User communication
External device
PLC Link Communication
• When the serial interface connecting external devices is RS485, a maximum of 31 external devices can
be connected. However, carefully check the specifications including the command settings and error
processing and verify whether or not multiple external devices is possible and if so how many number of
external devices may be supported.
• User communication cannot be used with 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.
• Flow Control setting is None.
• When using user communication via the HG2F/3F/4F O/I Link Interface, the settings are as follows.
- Data bits: 8 bits
- Stop bits: 1 bit
- Parity: None
• Half-duplex communication with the HG1F/2F/2S/3F/4F.
• For the HG2G-S/-5S/-5F and the HG3G/4G, the maximum size of sent data and the maximum size of
received data is 1,500 bytes.
For the HG1F/2F/2S/3F/4F, the maximum size of sent data is 200 bytes and the maximum size of received
data is 500 bytes.