Mitsubishi Electric MELSEC iQ-RJ71C24-R2 - Page 310

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15 DATA COMMUNICATIONS USING USER FRAMES
15.3 Program for Data Reception with User Frame
■When receiving with first start only (reception using Method 1)
06H
A
C
K
X3
M0
M1
ON
ON
00H,00H
3H
1002H/0H
0H
0H
0H
41BH
15H
6H
3E9H
3E8H
2H
0H
1H
0H
0H
0H
2H
1H
0H
INPUT
Ò
Ó
Ô
Head data
Since the received data count for format 1 is designated to
"0", the receive data count is "0".
The following diagram is for byte unit.
Target
device
User frame use enable/
disable designation
Un\G173
First frame
(Corresponds to
registration No.6H)
CPU module
First frame No. designation
Un\G174
(1st)
Un\G175
(2nd)
Reception data
read request
Un\G176
(3rd)
Un\G177
(4th)
CPU module
Last frame No. designation
(Each 3rd designated frame)
Un\G178
(1st)
Completion device
(None)
Un\G179
(2nd)
Abnormal
completion
Status display
device
at completion
(None)
(3rd)
Un\G180
0H
Normal
completion
(None)
(4th)
Un\G181
1 scan
(YES) (NO)
Receive transparent
code designation
Un\G288
(Disable)
ASCII-BIN conversion
designation
Un\G289
Receive user
frame ( th)
Un\G603
to D0
Receive data
count
Un\G1536
to D3
User frame receiving
format designation
Un\G8224
(1st = format-0)
Un\G8225
(2nd = format-0)
Un\G8226
(3rd = format-1)
Un\G8227
(4th = format-1)
Received data count
for format 1 only
Un\G8228
(1st)
Un\G8229
(2nd)
Un\G8230
(3rd)
Un\G8231
(4th)
Buffer memory