Mitsubishi L26CPU-BT, User Manual

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App - 57 App - 57
APPENDIXES
(Example) When the programmable controller CPU type is L26CPU-BT, the
transmission speed is 10 Mbps, the link scan time is 5 ms, the read
points are 20 words (buffer memory in the CC-Link), the monitoring
time is 10 s, and the number of retries is zero.
OT + LS [BC + {(read 16)/72}
1
1.13] + SM + (WT
RT 1000) [ms]
= 0.5 + 5 [12 + {(20 + 16)/72}
1
1.13] + 0 + (10 0 1000)
= 0.5 + 5 [12 + {1 1.13}] + 0
= 66.15
= 66.2 [ms]
1: Round up below the decimal point
2: Time elapsed when retries of a dedicated instruction occur
(b) G(P).RIWT instruction
OT + LS [BC + {(write 16)/16}
1
1.067] + SM + (WT RT
1000)
2
[ms]
OT: LCPU dedicated instruction processing time
L02CPU : 0.5 [ms]
L26CPU-BT: 0.5 [ms]
LS: Link scan time (refer to Appendix 4.1.)
BC:
Constant
Transmission speed 156 kbps 625 kbps 2.5 Mbps 5 Mbps 10 Mbps
BC 6 7 9 11 12
SM: Master station sequence scan time
(0 when writing buffer memory in the CC-Link)
WT: Monitoring time set in SW0009 (refer to Appendix 3.2.)
RT: Number of retries set in SW000B (refer to Appendix 3.2.)
(Example) When the programmable controller CPU type is L26CPU-BT, the
transmission speed is 10 Mbps, the link scan time is 5ms, the write
points are 20 words (buffer memory in the CC-Link), the monitoring
time is 10 s, and the number of retries is zero.
OT + LS [BC + {(write 16)/16}
1
1.067] + SM + (WT
RT 1000) [ms]
= 0.5 + 5 [12 + {(20 + 16)/16}
1
1.067] + 0 + (10 0 1000)
= 0.5 + 5 [12 + {3 1.067}] + 0
= 76.505
= 76.5 [ms]
1: Round up below the decimal point
2: Time elapsed when retries of a dedicated instruction occur