Omron SYSMAC NX-CIF105 User Manual

7 - 19
7 Serial Communications
NX-series Communications Interface Units User’s Manual (W540)
7-4 Examples of Communications between CPU Unit or Communications Master and CIF Unit
7
7-4-3 Simultaneously Sending and Receiving Data
In this example, a 4-byte text string (ABCD) is sent and a 4-byte text string (1234) is received at the
same time.
It is assumed that the Number of Characters
to Determine the End is set.
Here, we will assume that the input notification data and output notific
ation data are in the following sta-
tus before the data is sent and received.
 Input Notification Data
 Output Notification Data
7-4-3 Simultaneously Sending and Receiving Data
NX object name Value
Port Status 8010 hex
Input SID 02 hex
Output SID Response 02 hex
Input Data Type 2000 hex
Input Sub Info 0000 hex
Input Data Length 0006 hex
Input Data 01 55 hex, 56 hex, 57 hex, 58 hex
NX object name Value
Output SID 02 hex
Input SID Response 02 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
dire
ction
*1
CIF Unit processing
1 Output-
ting ABCD
• The communications master outputs
the fo
llowing output notification data to
pass ABCD to the CIF Unit.
• The above output notification data is
hel
d
until the CIF Unit sends input noti-
fication data in which the Output SID
Respo
n
se is 03 hex.

The CIF Unit receives the outp
ut notification
data given on the left.
2 Receiving
1234
--- The CIF Unit receives 1234 from the serial
line.
*2
Incremented.
4 bytes
ABCD
This is the final
send data.
03 hex
02 hex
2000 hex
0000 hex
0004 hex
41 hex,
42 hex,
43 hex,
44 hex
Output SID
Input SID
Response
Output Data
Type
Output Sub Info
Output Data
Length
Output Data 01

Omron SYSMAC NX-CIF105 Specifications

General

Brand	Omron
Model	SYSMAC NX-CIF105
Category	Recording Equipment
Language	English