WindO/I-NV4 User’s Manual 3-87
6 Sub Host Communication
3
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).
6.2 Supported Protocols and Communication Driver
The Sub Host communication can be used with the following protocols and communication drivers:
6 Sub Host Communication
HG3G
HG2G-5FHG5G-V HG4G-V HG3G-V HG2G-V HG2G-5T
HG4G HG1G HG1P
HG2J-7U
Read Write
5678
External device
0
1
D1:
M1:
5678
MICRO/I
Sub Host Communication
Numerical Display
Display Device Address: LLR1
Bit Button
Destination Device Address: LLR0
1
5678
LLR0
LLR1
HMI Link Register
Allocates M1
Allocates D1
External Device Address
Protocol Communication Driver
MICROSmart
Manufacturer: IDEC
Communication driver: OpenNet,MICROSmart,SmartAXIS Pro/Lite(RS232C/485)
Modbus RTU Master
Manufacturer: Modbus
Communication driver: 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.
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