KNF N 813.3 AN.29DC-B, Translation Of Original Operating And Installation Instructions

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Diaphragm Vacuum Pumps N 813 Operation
Translation of original Operating and Installation Instructions, english, KNF 121240-121506 09/19 27
The connection between the PC and motor controller can be
operated as an RS-232 interface. Accordingly, in the operating
system it is managed as an additional COM connection and can be
addressed with conventional terminal software.
Interface configuration
▪
Baud rate: 57600 bits/s
▪
Data bits: 8
▪
Parity: none
▪
Stop bits: 1
▪
Flow control: none
Tables 8 to 10 contain the necessary command sets, shown as
ASCII characters. When transmitting, the commands must be
followed by ASCII character <CR> (carriage return, decimal value
013). The underlined expressions are not characters, but symbols
as explained in table 16.
Parameter Command* Function Reply
Motor
dB Start S ; E
dE Stop S ; E
Speed
dS nnnn
[ nnnn = speed
value]
Set nominal
speed
ns ; E
Tab. 8: Control commands
* A pause of at least 25 ms is required after the “dB“ instruction set.
Parameter Command Reply
Actual motor speed;
operating current of the
motor;
temperature of the motor
controller;
Fault status
pP ni ; ii , ti , ei ; E
Fault status (single value) gP ei ; E
Nominal motor speed gS ns ; E
Minimum possible motor
speed
gSl nl ; E
Maximum possible motor
speed
gSh nh ; E
Software version number iV V ; E
Tab. 9: Read commands
Interface protocol