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15 DATA COMMUNICATIONS USING USER FRAMES
15.2 Data Reception
■User frame receiving method designation (Un\G8224 to 8227/8480 to 8483)
In data reception using a user frame, designate the reception method for each combination of receive user frames.
This setting is valid when the setting is configured in a combination that specifies a start frame. (Page 293 Start frame No.
designation area and final frame No. designation area (Un\G174 to 181/334 to 341))
For combinations other than those with the start frame only, data reception is performed using 'Method 0' even
if 'Method 1' is designated through the above reception method setting.
■Method 1 dedicated receive end data quantity designation (Un\G8228 to 8231/8484 to 8487)
• For a combination specifying Method 1 in the user frame receiving method designation, designate the arbitrary data word/
byte count (size for performing a reception data read request to the CPU module) when the applicable start frame is
received.
Specify this for each combination specifying Method 1.
• Designate this within the size of the receive data storage area on the buffer memory.
• The unit of setting values is in accordance with the setting value set for word/byte units designation.
to
b15 b0
(Default 0H)
Setting for the first combination
Buffer memory address
Un\G8224/8480
Setting for the second combination
Setting for the third combination
Setting for the fourth combination
Un\G8227/8483
0H: Format-0
1H: Format-1
Specify the
reception method
to
b15 b0
(Default 0H)
Setting for the first combination
Buffer memory address
Un\G8228/8484
Setting for the second combination
Received data count
for format 1 only
Setting for the third combination
Setting for the fourth combination
Un\G8231/8487
Write 0H to FFFFH
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