Operation
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Operation using the "WELCH-Control 521" PC program
The "WELCH-Control" enables the vacuum controller to be operated simply and easily from
the PC. The program can be purchased and installed as an option.
Make the cable connection (O-Modem) between PC and controller.
PC program
Most Current Version
Order no.
WELCH-Control 521
V 1.1
6
620637
CAUTION !
1.) "WELCH-Control 521" is currently version V 1.1
6
.
2.) Flash software is also currently version VCZ521_11
6
.mhx.
3.) Version 1.) and 2.) need not be identical!
The program attempts to find a switched-on controller on COM1 to 20. A COM-Port 1..255
can also be defined as a command line parameter: VCZ521.EXE 2 -> select COM2
If a controller cannot be found, the program goes into offline mode.
Here, a previously saved curve can be reloaded and printed out.
Internal wiring of the controller RS 232 port
PIN Cable colour
Connection on the main board
2
white
16
RS 232 - RXD
3
brown
17
RS 232 - TXD
5
green
18
GND
9
yellow
19
Flash - sets software update mode if on GND (18)
The following screen appears after the start:
The graph shows the pressure development. Both the chronological and the pressure dis-
play range can be set. Data can also be recorded in the PC memory, which can then be
stored as an ASCII file in the "File / Save memory" menu.
