CV500BC101 Omron, CV500BC101 Datasheet - Page 281

• Manufacturer Part Number: CV500BC101
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500BC101

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Calculation Example
8-2-2
256
Communications Cycle Time
Inactive Data Links
The number of bytes in each message differs according to the instruction
being issued.
Communications conditions are as follows:
In this example, A to E in the equation have the following values.
The communications cycle time is thus as follows:
The following equations are used to calculate a communications cycle time
when the data link is inactive.
Wired Systems
Baud rate
2 Mbps
1 Mbps
500 Kbps
SEND
RECV
CMND
Instruction
Transmission medium:
Baud rate:
Network parameters:
Max node address:
Polled nodes per comm cycle:
Event-frames per comm cycle:
Network configuration:
Total number of data link words:
Nodes that send messages:
Bytes in all messages sent:
A:
B:
C:
D:
E:
10 × 8,000 + 600 × 4 + 290 × 8 + 320 × 2 + 4 × 4,024 + 3,290 = 104,746 ( µ s)
≅ 105 (ms)
Note B: Number of polled nodes per communications cycle
8,000
4
8
2
4,024
C: Number of nodes connected to network
D: Number of nodes that send messages during the
E: Total number of bytes in messages transmitted during the
600 × B + 110 × C + 320 × D + 4 × E + 2,290 (µs)
1,150 × B + 150 × C + 360 × D + 8 × E + 2,690 (µs)
2,260 × B + 230 × C + 440 × D + 16 × E + 3,490 (µs)
(value specified in the network parameter)
communications cycle
communications cycle
Number of words to be sent × 2 +
18
18
Number of bytes in command
data + 10
When sent
Equation
Twisted-pair cable
2 Mbps
Defaults
32
4
35
8 nodes
8,000 words
2 nodes
2,012 × 2 bytes
14
Number of words to be received
× 2 + 14
Number of bytes in response
data
When received
Section 8-2