Mitsubishi Electric MELSEC-Q Series User Manual page 371

(2) In the remote I/O net mode
LS = BT{27 + (NI × 4.8) + (N × 30) + (ni × 4.8)} + ST + RT + F [µs]
BT: Constant (transmission speed)
Transmission
speed
BT
NI: Last station number (The value should be multiples of 8.)
Last
1 to 8
station No.
NI 8
N: Number of connected modules
ni: Total number of occupied stations
ST: Constant
250 + (ni × 10)
RT: Retry processing time (Only the link scan with a faulty slave station where data link is being performed is
added.)
 + × (number of detected faulty stations -1)
:
Retry processing time of the first station
BT × (778.5 + R × 3)
R: 13.2 + (NI × 4.8)
:
Retry processing time of the second and subsequent stations
BT × (778.5 + P × 3)
P: 10.8
F: Return processing time (added only when there is a faulty station)
BT × 243.1 + ST
156kbps 625kbps
51.2 12.8
9 to 16 17 to 24
16 24
2.5Mbps 5Mbps
3.2
25 to 32 33 to 40 41 to 48
32 40 48
APPENDICES
10Mbps
1.6 0.8
49 to 56 57 to 64
56 64
369
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