Omron SYSMAC NX-CIF Series User Manual page 121

CPU Unit or communications master
Step Process
2 Inputting The communications master receives
string from the input notification data given on the
A to T right.
3 Input The communications master outputs
response the following output notification data to
for A to T tell the CIF Unit that ABCDEFGHI-
JKLMNOPQRST was received nor-
mally.
Output SID
Input SID
Response
Output Data
Type
Output Sub Info
Output Data
Length
Output Data 01
4 • Input- • The communications master
ting receives the input notification data
string given on the right.
UVWXY
• The communications master knows
Z
that the CIF Unit detected the end of
• Notifica- the receive data because the End
tion of Detected in the Port Status in the
end input notification data is TRUE.
detec-
tion
NX-series Communications Interface Units User's Manual (W540)
processing
02 hex
Set the Input
01 hex
SID.
0000 hex
0000 hex
0000 hex
00 hex,
00 hex,
00 hex,
00 hex
7 Serial Communications
Communi-
cations
CIF Unit processing
*1
direction
• The CIF Unit inputs the following input noti-
fication data to pass ABCDEFGHIJKLM-
NOPQRST to the CPU Unit or
communications master.
Port Status
Input SID
Output SID
Response
Input Data Type

Input Sub Info
Input Data Length
Input Data 01 to
05
• The above input notification data is held
until the CPU Unit or communications mas-
ter sends output notification data in which
the Input SID Response is 01 hex.
• The CIF Unit receives the output notification
data given on the left.
• The CIF Unit knows that ABCDEFGHI-
JKLMNOPQRST was normally received by
the CPU Unit or communications master
because the Input SID Response in the out-
put notification data is 01 hex.

• The CIF Unit inputs the following input noti-
fication data to pass UVWXYZ to the CPU
Unit or communications master.
• At the same time, the CIF Unit tells the CPU
Unit or communications master that the end
of the receive data was detected.
Port Status
Input SID
Output SID

Response
Input Data Type
Input Sub Info
Input Data Length
Input Data 01 to
05
0010 hex
Incremented.
01 hex
02 hex There is receive
data that is not
the final receive
1000 hex
0000 hex data.
20 bytes
0014 hex
41 hex, A to T
42 hex,
:
53 hex,
54 hex
End was detected.
8010 hex
02 hex Incremented.
02 hex
This is the final
2000 hex
receive data.
0000 hex
6 bytes
0006 hex
55 hex,
"UVWXYZ"
56 hex,
57 hex,
58 hex,
59 hex,
5A hex,
00 hex
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