Mitsubishi L26CPU-BT, Руководство пользователя

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App - 55 App - 55
APPENDIXES
Appendix 4.8 Processing time for dedicated instructions of master station local station
(1) Master station local station
This indicates the time from the moment an instruction is issued by the master
station until a response from the local station is received.
[Expression]
[Maximum value]
(a) G(P).RIRD instruction
OT + LS [BC + {(read 16)/16}
1
1.067] + SL + (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
SL: Local station sequence scan time
(0 when reading 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 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)/16}
1
1.067] + SL +
(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