CV500BC031 Omron, CV500BC031 Datasheet - Page 290

• Manufacturer Part Number: CV500BC031
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500BC031

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

Message Delay Times
Note The I/O response time can increase due to noise or restrictions on the number
Max. transmission delay = Link Unit servicing interval (source node) + Link
service processing (source node) + Transmission processing + Communica-
tions cycle time + Transmission delay + Reception processing + Link Unit ser-
vicing interval (destination node) + Link service processing (destination node)
Link Servicing Interval (Source and Destination Nodes)
Link servicing depends on the execution mode of the PLC. The execution
modes on the source and destination modes need not be the same.
For synchronous execution, links are serviced once per PLC execution cycle.
For asynchronous execution, links are serviced according to the peripheral
servicing interval. Refer to the operation manual for the PLC for details. Refer
to the CVM1 and CV-series PLCs Operation Manual: Ladder Diagrams
(W202) or CS/CJ-series PLCs Instructions Reference Manual (W340) for
details.
Link Service Processing (Source and Destination Nodes)
Link service processing is the same as the PLC’s peripheral servicing and is
approximately 1 ms for Controller Link Units.
Transmission Processing
Number of words transferred × 0.00075 ms + 2 ms
Communications Cycle Time (with Data Links Inactive)
See 8-2 Communications Cycle Time (on page 255).
Transmission Delay Time
Transmission delay time varies with the baud rate.
Reception Processing
Number of words transferred × 0.00075 + 1.3 ms
of frames that can be transmitted while data links are operating.
Example
In this example, the maximum transmission delay is calculated for an instruc-
tion sending 256 words of data in a system with 32 nodes. Network specifics
are detailed below:
Baud rate
2 Mbps
1 Mbps
500 Kbps
Baud rate:
Max. node address:
Number of nodes:
Number of polled nodes per comm cycle: 4
Source node execution:
Destination node execution:
Number of words:
Data link:
Number of words transferred × 0.008 + 0.112 ms
Number of words transferred × 0.016 + 0.224 ms
Number of words transferred × 0.032 + 0.448 ms
Transmission delay time
2 Mbps
32
32
Synchronous
Asynchronous
256
Inactive
Section 8-4
265