Sub Host Communication; Overview; Supported Protocols And Communication Driver - IDEC WindO/I-NV4 User Manual

6

Sub Host Communication

6.1 Overview

Sub Host Communication is a function for communicating with an external device using the MICRO/I's HMI Link
Registers (LLR).
The external device addresses are allocated to HMI Link Registers (LLR). When MICRO/I receives a request to read
from or write to HMI Link Registers (LLR), it reads from or writes to the allocated external device addresses, and the
execution results are stored in HMI Link Registers (LLR).
HMI Link Register
LLR0 1
LLR1 5678
Sub Host Communication

6.2 Supported Protocols and Communication Driver

The Sub Host communication can be used with the following protocols and communication drivers:
Protocol
MICROSmart
Modbus RTU Master
For the device addresses that can be used by each protocol, communication cable connection, and usable
device addresses, refer to "5.5 Connection Diagram for User Communication" on page 3-86 and Chapter 2
"Connection to a PLC" in the WindO/I-NV4 External Device Setup Manual.
HG2J-7U HG5G-V HG4G-V
External Device Address
Allocates M1
Allocates D1
Read
0 1
M1:
External device
Manufacturer: IDEC
Communication driver: OpenNet,MICROSmart,SmartAXIS Pro/Lite(RS232C/485)
Manufacturer: Modbus
Communication driver: Modbus RTU Master
WindO/I-NV4 User's Manual
HG4G HG3G-V HG3G HG2G-V
MICRO/I
Numerical Display
Display Device Address: LLR1
5678
Bit Button
Destination Device Address: LLR0
Write
D1: 5678
Communication Driver
6 Sub Host Communication
HG2G-5F HG2G-5T HG1G HG1P
3-87
3