Practice Using A User Frame (Default Frame) - Mitsubishi Electric AJ71QC24 Manual

5. NON PROCEDURE PROTOCOL COMMUNICATIONS MELSEC QnA
Kinds of user frames and cataloguing destination
The following table shows the kinds of user frame and their registering destinations.
Kind
Features
Registering destina- User frame
No. tion
Default frame
(fixed data)
Since the frame
IS
written to the ROM in
QC24
OS
ROM 1 H-3E7H
advance, the frame No. is designated.
User frame 3E8H-4AFH
(arbitrary data)
User frames written to the EEPROM are not QC24 EEPROM
lost even when the power
I S
turned OFF.
I
8001 H-801 FH
The frame must be written to bclffer memory
QC24 buffer memory
(addresses
each time data is sent and received.
1
1 BOOH-1 FFGH)
I
5.7.2 Practice using a user frame (default frame)
Use a user frame to read data with a bar code reader.
System configuration
The data to be read with the bar code reader is written to the QC24 buffer memory.
The PC reads this data from the buffer memory to the data memory.
The A7HGP monitors the data.
B
Q4ACPU AX42 AY42 AJ71
v)
x00
Y ~ O
x
yao
1 i t
Bar code reader
AJ71 QC24 settings
Mode Setting
C H I : Set to No. 6
non procedure
protocol
I
CH2: Set to No.
1
[
Transmission Specifications
Switch Switch Setting Item Setting Contents
Setting
SWO1
ODeration settina OFF (indeDendent oDerationi
ON (2 bits)
SW08
Setting modification enable/disable ON (Enable)
*
SWO9
Transmission rate settina
OFF
setting
1
(4800BPS)
s w 1 2
1
OFF
*
When using a user frame, set SW08 (setting modification enable/disable setting) to ON
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