CV500BC051 Omron, CV500BC051 Datasheet - Page 296

• Manufacturer Part Number: CV500BC051
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500BC051

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

Message Delay Times
Note This communications cycle time is calculated assuming that there is no node
Reception Processing
Commands: 2.3 ms
Responses: Number of words transferred × 0.00125 ms + 2.3 ms
The I/O response time might increase due to noise or restrictions on the num-
ber of frames that can be transmitted while the data link is operating.
Example
In this example, the maximum transmission delay is calculated for an instruc-
tion receiving 256 words of data in a system with 32 nodes. Network specifics
are detailed below:
that transmits event frames before the SEND command is executed.
Link Unit servicing (source node) × 2
Transmission processing (command)
Communications cycle time × 2 (See note.)
Transmission delay (command)
Reception processing (command)
Link Unit servicing (destination node)
Transmission processing (response)
Transmission delay (response)
Reception processing (response)
Total (max. transmission delay)
Baud rate:
Max. node number:
Number of nodes:
Number of polled nodes: 4
Number of words:
Data links:
2 Mbps
32
32
256
Halted
PLC cycle time (source node) × 2
3 ms
(600 × 4 + 110 × 32 + 320 × 0 + 4 ×
0 + 2,290) × 2 = 8,210 µs × 2 ≅
16.4 ms
0.112 ≅ 0.1 ms
2.3 ms
PLC cycle time (destination node)
0.00125 × 256 + 3 = 3.32 ≅ 3.3
0.008 × 256 + 0.112 = 2.16 ≅ 2.2
0.00125 × 256 + 2.3 = 2.62 ≅ 2.6
PLC cycle time (source node) ×
2 + PLC cycle time (destination
node) + Peripheral servicing
time (destination node) +
29.9 ms
Section 8-4
271