Appendix – Lenze EMF2102IB User Manual
Page 54
Appendix
8-22
L
_^ONMObk
Examples for a RECEIVE telegram
Example 1
The current speed setpoint (code number C46) is to be read with the bus address 01 at the controller.
The host sends the following RECEIVE telegram
EOT
0
1
4
6
ENQ
The controller can respond in three different ways:
STX
4
6
3
5
.
4
ETX
BCC
Valid request: The current value of the parameter C46 is 35.4 (Hz)
or
STX
4
6
?
ETX
BCC
Invalid request: A check-sum fault (parity fault) occurred during data transmission
or
STX
4
6
EOT
Invalid request: Parameter C46 does not exist in this controller.
Example 2
The current operating status (code number C68) is to be read with the bus address 25 for the
controller.
The operating status is bit-coded and transmitted in the hexadecimal format.
The host sends the following RECEIVE telegram
EOT
2
5
6
8
ENQ
The controller’s response:
STX
6
8
H
0
9
0
0
ETX
BCC
Valid request: The current value of the parameter C68 is ” 0900” . This means:
TRIP status
not active
Maximum current
not reached
Quick stop
not active
Pulse inhibit status
free
Display of the direction of rotation
CW rotation
Q
min
status
not active
Controller enable
enabled
Operating fault
did not occur
Communication error
did not occur
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