Transmission Delay Time - Mitsubishi Electric Melsec Q Series User Manual

3
SPECIFICATIONS

3.5.2 Transmission delay time

The transmission delay times of the input data and output data vary depending on the data
consistency setting.
The calculation formulas for the transmission delay time are shown in (1) and (2) below.
Note that the following symbols are used in calculation formulas (1) and (2):
Bc: Bus cycle time
Scan: Scan time
(1) When the data consistency function is disabled
3
- 63 3.5 Processing Time
3.5.2 Transmission delay time
*1
* 1 When multiple DP-Masters exist on the same network, replace Bc with TBc.
When reading/writing I/O data by automatic refresh (data consistency function
disabled), the MOV instruction or FROM/TO instruction, the transmission delay time is
as shown below.
(a) Output data delay time
Table3.26 Output Data Delay Time (Data consistency function disabled)
Item
Normal value
Max. value
(b) Input data delay time
Table3.27 Input Data Delay Time (Data consistency function disabled)
Item
Normal value
Max. value
Transmission Delay Time
Bc 1.5
Bc 2
Transmission Delay Time
Scan+Bc
Scan + Bc 2