Mitsubishi Electric QJ71E71-100 User Manual page 345

APPENDICES
[Calculation example 1]
A
The time between the QJ71E71-B5 receiving request data from a personal computer and it completing reading
when the QJ71E71-B5 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 QJ71E71-B5-mounted station is 10ms, the command data length is 21 words,
and the response data length is 211 words.
37.64 + ACK processing time of the connected device (ms) 23 + (0.020 × (21 + 211)) + 10 × 1 + ACK
processing time of the connected device
[Calculation example 2]
The time between the QJ71E71-B5 receiving request data from a personal computer and it completing writing
when the QJ71E71-B5 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 QJ71E71-B5-mounted station is 10ms, the command data length is 221 words,
the response data length is 11 words, and writing during RUN is enabled.
40.58 (ms) 22 + (0.037 × (221 + 11)) + 10 × 1
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