Communication times, Parameter setting, With communication module lecom−a (rs232) – Lenze 8200 motec frequency inverter 0.25kW-7.5kW User Manual
Page 65: 2 communication times
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Parameter setting
With communication module LECOM−A (RS232)
6−10
L
EDB82MV752 EN 5.2
6.3.1.2
Communication times
The time required for communication with the drive can be displayed as a sequence of time
segments. The communication times depend on the baud rate set in C0125:
Section
Active component
Action
t0
Application program in the host system
Starts request on the controller
t1
Software driver in the host system
Converts request data into the LECOM−A/B protocol and starts the transmission
t2
Communication (= serial transmission) to the controller (telegram run time)
t3
Controller
Processes the request and starts the response
t4
Communication response is transmitted (telegram run time)
t5
Software driver in the host system
Evaluates the response and converts it into the format of the application program
t6
Application program in the host system
Receives the result
Telegram run time (t2 + t4) [ms]
Baud rate [bits/s] (can be set with C0125)
1200
2400
4800
9600
19200
SEND telegram type
(sends data to the drive)
t2
Standard
(parameter value = 9 characters)
150
75
37.5
18.8
9.4
Addition for extended addressing
41.6
20.8
10.4
5.2
2.6
RECEIVE telegram
(reads data from the drive)
t4
Standard
(parameter value = 9 characters)
166.7
83.3
41.7
20.8
10.4
Addition for extended addressing
83.3
41.7
20.8
10.4
5.2
Runtime of single character
1)
per character [ms]
8.4
4.2
2.1
1
0.52
Processing time in the controller (t3)
t3 [ms]
Write codes
20
Read codes
20
1)
If the telegram contains less or more than nine characters, the transmission time changes by the values given.