Overview Of The Communication Procedure - Mitsubishi Electric FX3U-ENET-ADP User Manual

FX -ENET-ADP User's Manual
3U
4) Communication data code settings
Select the format of the communication data (MC Protocol) when communicating with an external device.
Name of setting
Binary code
ASCII code
When communicating using ASCII code, 1-byte binary code data is automatically converted into 2-byte
ASCII code data and then transmitted.
(Example)
Binary code data
15H
(One byte)
1234H
(Two bytes)
5) Direct connection (simple connection) settings
Select whether or not direct connection (simple connection) is used.
For operation of GX Works2, refer to Section 8.1. For other contents, refer to Subsection 6.2.3.
6) Find CPU function settings
Select whether or not the find CPU function is used.
For operation of GX Works2, refer to Subsection 8.5.2. For other contents, refer to Subsection 6.2.4.
6.7

Overview of the Communication Procedure

This section gives an overview of the procedure for performing data communication with external devices via
the Ethernet adapter.
Start data communication by establishing connections with external devices via initial and open processing.
End data communication by closing the connection, and, as a result, terminating all communication
processing.
The following diagram illustrates the communication procedure:
(There is no connection since UDP/IP does not have a notion of connection.)
Open processing
Communication using the MC protocol
Close processing
40
Description of setting
Communicate using binary code data.
Communicate using ASCII code data.
Set parameters for the PLC main unit
(Ethernet adapter) using GX Works2
Start the PLC main unit (Ethernet adapter)
Ethernet adapter initial processing
Refer to Section 6.12.
Refer to Section 6.12.
6.7 Overview of the Communication Procedure
ASCII code data
31H, 35H
"1" , "5"
(Two bytes)
31H, 32H, 33H, 34H
"1" , "2" , "3" , "4"
(Four bytes)
Refer to Section 6.6, "Ethernet adapter Setting."
Refer to Section 6.8, "Initial Processing."
Refer to Section 6.11, "Open Settings."
Automatically processed.
MELSOFT connection
6 Introduction of Functions