IDEC High Performance Series - Manual (Page 575)

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6 Result on the Performance Evaluation of the MICRO/I
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External Device Setup Manual
6 Result on the Performance Evaluation of the MICRO/I
Evaluation of O/I Link performance with the MICRO/I is conducted in the following conditions.
6.1 Conditions
6.1.1 When devices of the same type are set for Slave 1 to 15
For master unit, enable System Area 1 to 4 (12 words data).
For the Slave 1 to 15, enable System Area 1 to 4(12 words data) and 50 words data which are same as each Slaves.
6.1.2 When devices of different types are set for Slave 1 to 15
For master unit, enable System Area 1 to 4 (12 words data).
For the Slave 1 to 15, enable System Area 1 to 4(12 words data) and 50 words data which are different from each Slaves.
The above measurement results vary depending on the Host I/F driver or Communication driver.
Use the values as a rough guide. Also make sure to evaluate the performance before constructing a system.
PLC PLC Link compatible MELSEC-Q Series Baud Rate: 115200 bps
O/I Link No. of units: 16 Total cable length: 200 m Baud Rate: 115 kbps
O/I Link Polling Period (LSD101 in the slaves) 220 msec
Read scan of PLC device (LSD6 in the master) 150 msec *1
*1. Since the master performs lump communication for the devices used redundantly with the slave units, the communication time can be reduced.
O/I Link Polling Period (LSD101 in the slaves) 250 msec
Read scan of PLC device (LSD6 in the master) 1360 msec