Mitsubishi Electric MELSEC-L SERIES Basic User Manual page 309

[Calculation example 1]
The time between the E71 receiving request data from a personal computer and it completing reading when the
E71 communicates with the personal computer in TCP/IP and reads 100-point data of an ASCII code from the
data register (D) in the own station (unit: ms)
Assume that the scan time of the E71-connected station is 10ms, the command data length is 21 words, and the
response data length is 211 words.
• 14.37 + ACK processing time of the connected device (ms)
 3.3 + (0.0046  (21 + 211)) + 10  1 + ACK processing time of the connected device
[Calculation example 2]
The time between the E71 receiving request data from a personal computer and it completing writing when the
E71 communicates with the personal computer in TCP/IP and writes 100-point data of an ASCII code to the data
register (D) in the own station (unit: ms)
Assume that the scan time of the E71-connected station is 10ms, the command data length is 221 words, the
response data length is 11 words, and writing during RUN is enabled.
• 14.99 (ms) + ACK processing time of the connected device
 3.3 + (0.0073  (221 + 11)) + 10  1 + ACK processing time of the connected device
APPENDICES
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