![background image](http://html1.mh-extra.com/html/omron/cs1w-clk12-v1/cs1w-clk12-v1_operation-manual_742356209.webp)
192
Data Link I/O Response Time
Section 9-3
9-3-3
Calculation Example
The data links of the Controller Link Unit require a slight time delay from the
time the data link area of one node is changed until this change is reflected in
the data link area at another node. This time delay is called the data link I/O
response time. The following is a calculation example of the maximum and
minimum I/O response times for the system configuration shown below.
The data link I/O response time depends on the communications cycle time,
input ON delay, output ON delay, and the cycle times of the PLCs involved.
The values are detailed below.
Communications Cycle
Time
Communications cycle time =
9.1
×
(8 + 16)
×
8 + 1,740
×
4 + 960
×
8 + 2
×
7
×
8 + 4,800 =21,299
µ
s
≅
22 ms
Input ON Delay
The input ON delay is the time it takes for an input device to turn ON an input
to the PLC after receiving an input signal. In this system the input ON delay is
1.5 ms max.
Output ON Delay
The output ON delay is the time it takes for an output device to turn ON an
output signal after receiving an output from the PLC. In this system the output
ON delay is 15 ms max.
Cycle Times
The cycle time of the PLC at node #1 is 15 ms or 8 ms.
The cycle time of the PLC at node #7 is 20 ms or 8 ms.
PLC
PLC
C
L
K
#1
C
L
K
#7
Input
LRXXXX
Output
LRXXXX
CLK: Controller Link Unit
System configuration
H-PCF cable used
Connection method:
Token-ring mode
Transmission distance:
8 km
Maximum node address:
62
Number of polled nodes per comm cycle: 4
Number of event-frames per comm cycle: 35
Nodes in network:
8 nodes
Nodes in data links:
8 nodes
Words sent in area 1:
8 words per node
Words in area 2:
16 words per node
No messages communications are performed.
A single Controller Link Unit is mounted to each CPU Rack.
Input
Summary of Contents for CS1W-CLK12-V1
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 11: ...xii ...
Page 59: ...42 Component Names and Functions Section 3 1 Dimensions Unit mm ...
Page 62: ...45 Component Names and Functions Section 3 1 Dimensions Unit mm ...
Page 91: ...74 CVM1 and CV series Optical Ring Controller Link Units Section 4 2 ...
Page 108: ...91 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 125: ...108 Checking Data Link Status Section 5 4 ...
Page 181: ...164 Setting Routing Tables Section 7 4 ...
Page 199: ...182 Memory Areas Related to Duplex Operation Section 8 6 ...
Page 275: ...258 Handling Precautions Section 10 7 ...
Page 298: ...281 CS series Optical Bus Controller Link Units Appendix C Dimensions Unit mm 101 35 130 ...
Page 299: ...282 CS series Optical Bus Controller Link Units Appendix C ...