7 Serial Communications
7 - 24
NX-series Communications Interface Units User’s Manual (W540)
Output Notification Data
Input Data Length 0000 hex
Input Data 01 00 hex, 00 hex, 00 hex, 00 hex
NX object name Value
Output SID 03 hex
Input SID Response 05 hex
Output Data Type 0000 hex
Output Sub Info 0000 hex
Output Data Length 0000 hex
Output Data 01 00 hex, 00 hex, 00 hex, 00 hex
Step Process
CPU Unit or communications master
processing
Communi-
cations
direc
tion
*1
CIF Unit processing
1 Output
SID initial-
ization
• The communications master initializes
th
e value of the Output SID to 00 hex
and outputs the following output notifi-
cation data.
• The above output notification data is
held
until the CIF Unit sends the input
notification data in which the Output
SID Response is 00 hex.
The CIF Unit receives the output notification
da
ta
given on the left.
2 Response
to initia
l-
ized
Out-
put SID
• The communications master receives
th
e input notification data given on the
right.
• The communications master knows
th
at in
itialized Output SID was nor-
mally received by the CIF Unit because
th
e Outpu
t SID Response in the input
notification data is 00 hex.
The CIF Unit inputs the following input notifi-
cation data to tell the CPU Unit or communi-
cations master that the ini
t
ialized Output SID
was received normally.
NX object name Value
Initialization
00 hex
05 hex
0000 hex
0000 hex
0000 hex
00 hex,
00 hex,
00 hex,
00 hex
Output SID
Input SID
Response
Output Data
Type
Output Sub Info
Output Data
Length
Output Data 01
0010 hex
05 hex
00 hex
2000 hex
0000 hex
0000 hex
00 hex,
00 hex,
00 hex,
00 hex
Set the Output
SID.
Input Data 01
Port Status
Input SID
Output SID
Response
Input Data Type
Input Sub Info
Input Data Length