Mitsubishi FX3U-16CCL-M User Manual

7 Data Link Processing Time
7.1 Link Scan Time
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FX3U-16CCL-M User's Manual
7. Data Link Processing Time
This chapter explains the data link processing time such as the link scan time and transmission delay time.
7.1 Link Scan Time
This section explains the CC-Link scan time.
When data links are normally being performed among all stations in the CC-Link system, the retry processing
time (RT) and the return processing time (F) in the formula are not necessary to be added.
1. Link scan time (LS)
Calculation expression
LS = BT {27 + (NI × 4.8) + (NW × 9.6) + (N × 30) + (Ni × 4.8) + (nw × 9.6) + TR} + ST + EX + RT + F [μs]
• BT: Constant (transmission speed)
• NI: The final station number in A, B and C
(Includes the number of dedicated stations but excludes the reserved stations, and must be a multiple of 8.)
- A: Last station number of remote I/O stations
- B: Last station number of remote device stations (including the number of occupied stations)
- C: Last station number of intelligent device stations (including the number of occupied stations)
• NW: The final station number in B and C
(Includes the number of dedicated stations but excludes the reserved stations, and must be a multiple of 8.)
• N: Number of connected stations (excluding reserved stations)
• ni: a + b + c (excluding reserved stations)
- a: Total number of occupied stations for remote I/O stations
- b: Total number of occupied stations for remote device stations
- c: Total number of occupied stations for intelligent device stations
• nw: b + c (excluding reserved stations)
• TR: Transient processing time (only when a transient request is made)
- When there is a transient request from the master station: 180
- When there is a transient request from an intelligent device station:
40.8 × number of transient transmission stations
• ST: Constant
(The largest value found in 1) to 3) below. However, 2) is disregarded when B = 0 and 3) is disregarded
when C = 0)
1) 800 + (A × 15)
2) 900 + (B × 50)
3) 1200 + (C × 100)
• EX: Constant (only when remote net ver. 2 mode or remote net additional mode is used)
50 + total in the following table
Transmission speed 156 kbps 625 kbps 2.5 Mbps 5 Mbps 10 Mbps
BT 51.2 12.8 3.2 1.6 0.8
Last station Number 1 to 8 9 to 16
NI, NW 8 16
Expanded
cyclic setting
Number of occupied stations
Occupies 1 station Occupies 2 stations Occupies 3 stations Occupies 4 stations
single0000
double
70
× Number of stations 80 × Number of stations 90 × Number of stations 100 × Number of stations
quadruple
90 × Number of stations 110 × Number of stations
--
octuple
110 × Number of stations
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Mitsubishi FX3U-16CCL-M Specifications

General

Brand	Mitsubishi
Model	FX3U-16CCL-M
Category	Controller
Language	English