Mitsubishi Electric NZ2GF-ETB, Руководство пользователя

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103
CHAPTER 7 COMMUNICATION OF THE ETHERNET ADAPTER MODULE
7
7.
2
Com
m
unicat
ion Us
in
g t
he O
n-dem
and
F
unc
tion
7.2.7
Example of on-demand data sending
This section explains how to send on-demand data and provides a program example.
(1) How to send data
Follow the instructions below to send on-demand data.
(a) Ethernet adapter module
1.
Connect the Ethernet adapter module to CC-Link IE Field Network and Ethernet. (

Page 68,
Section 7.1)
Before connecting to Ethernet, establish connection between an external device and the Ethernet adapter
module.
(b) CPU module (for channel 1)
1.
Write parameters and a program to the CPU module and reset the CPU module. (

Page 104,
Section 7.2.7 (2))
2.
Run the CPU module.
3.
Read Send completed flag (buffer memory address: 5633 (1601
H
)) in the Ethernet adapter module
using the REMFR instruction.
When the 0th bit or 1st bit of Send completed flag is 1 (ON), set the 0th bit of Send request flag (buffer
memory address: 5632 (1600
H
)) to 0 (OFF).
4.
Set Control data (buffer memory address: 5635 to 5643 (1603
H
to 160B
H
)) and Send data (buffer
memory address: 5644 to 6603 (160C
H
to 19CB
H
) in the Ethernet adapter module using the REMTO
instruction.
5.
Set Send request bit of Send request flag in the Ethernet adapter module to 1 (ON) using the
REMTO instruction.
6.
On-demand data is sent.
7.
Read Send completed flag and Completion code (buffer memory address: 5634 (1602
H
)) in the
Ethernet adapter module using the REMFR instruction.
If the 1st bit of Send completed flag is 1 (ON), check Completion code (error code) and remove the error
cause. (
 Page 161, Section 9.5)
8.
Set Send request flag and Send completed flag to 0 (OFF).
(c) External device
1.
Receive on-demand data.
2.
Find whether the received data is on-demand data or data received using a command.
When the command No. in the message is 2101, the data is on-demand data.
3.
Process the data.
For details, refer to the buffer memories used for the on-demand function. (  Page 93, Section 7.2.5)