Mitsubishi MELSEC-F User Manual page 273

APPENDIX
App - 3
[Calculation example 1]
Calculate the time the FX
a data request from a PC after receiving it, when the FX
the PC perform TCP/IP communication and read 32 points of ASCII
code data from the data register (D) of the local station (unit: ms) using
MC protocol communication.
• Assume that the scan time of the FX
ms:
59.17 + ACK processing time of the external device (ms)
18 + (0.015 × (12 + 66)) + 40 × 1 + ACK processing time of the
external device
[Calculation example 2]
Calculate the time the FX
a data request from a PC after receiving it, when the FX
the PC performs TCP/IP communication and writes 32 points of ASCII
code data to the data register (D) of the local station (unit: ms) using
MC protocol communication.
• Assume that the scan time of the FX
ms:
58.11 (ms)
-ENET takes to complete the processing of
3U
-ENET installed station is 40
3U
Command data length = 12 words
Response data length = 66 words
-ENETtakes to complete the processing of
3U
-ENET installed station is 40
3U
16 + (0.027 × (76 + 2)) + 40 × 1
Command data length = 76 words
Response data length = 2 words
MELSEC-F
-ENETand
3U
-ENETand
3U
App - 3