CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 328
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CJ1W-EIP21
Manufacturer Part Number
CJ1W-EIP21
Description
Ethernet I/P Module
Manufacturer
Omron
Datasheet
1.CJ1W-EIP21.pdf
(469 pages)
Specifications of CJ1W-EIP21
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Message Service Transmission Delay
Example Calculation
300
In this example, RECV(098) is used to receive 256 words of data from another
PLC. The maximum transmission delay is calculated based on the following
operating conditions.
CPU Bus Unit service cycle (local
node, 1)
CPU Bus Unit service processing
time (local node, 1)
Send processing (command)
Transmission delay (command)
Receive processing (command)
CPU Bus Unit service cycle (remote
node)
CPU Bus Unit service processing
time (remote node)
Send processing (command)
Transmission delay (command)
Receive processing (command)
CPU Bus Unit service cycle (local
node, 2)
CPU Bus Unit service processing
time (local node, 2)
Maximum transmission delay
• Local node’s CPU cycle time: 10 ms
• Local node’s CPU execution mode: Normal
• Local node’s CPU peripheral servicing time: Default (4%)
• Remote node’s CPU cycle time: 15 ms
• Remote node’s CPU execution mode: Normal
• Remote node’s CPU peripheral servicing time: Default (4%)
• Baud rate: 100Base-TX
Item
10 ms
0.4 ms
0.550 ms ≅ 0.5 ms
0.0118 ms ≅ 0.1 ms
0.704 ms ≅ 0.7 ms
15 ms
0.6 ms
(256 × 0.002) + 0.550 = 1.062 ≅ 1.1 ms
(256 × 0.0013) + 0.0118 = 0.3446 ≅ 0.3 ms
(256 × 0.003) + 0.704 = 1.472 ≅ 1.5 ms
10 ms
0.4 ms
10 + 0.4 + 0.5 + 0.1 + 0.7 + 15 + 0.6 + 1.1 +
0.3 + 1.5 + 10 + 0.4 = 40.6 ms
Calculated value
Section 10-5
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