KEYENCE N-400 - Manual (Page 93)

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Chapter 4 Multi-Drop Link Mode Control Procedure
4
Baud rate (for RS-232C) Communication time (B)
Command = LON Command = LOFF
9600 bp 12.5 ms 13.8 ms
38400 bps 3.2 ms 3.5 ms
Baud rate (for RS-485) Communication time (D)
Command = LON Command = LOFF
9600 bp 29 ms 30 ms
38400 bps 11.5 ms 11.8 ms
Then, obtain the time duration (D) required for the RS-485 command transmission
from the N-400 to the BL series. When the reading start command (LON) or read-
ing end command (LOFF) is sent to the BL series, for example, the communication
time is as follows:
From the above data, the total communication time (E) can be obtained as follows:
Maximum time: E = C + b + D
* b: Time required for the data transmission from the BL series to the N-400 when
the BL series has stored some data
Minimum time: E = C + D