VEGA VEGACOM 557 VEGA ASCII protocol - Manual (Page 20)

20 VEGACOM 557 VEGA ASCII
Possible settings of the DIL switch on the basic
board Side view of VEGACOM 557
3 Switch settings on
VEGACOM 557
For adjustment of the interfaces or the BUS
parameters of the PC interface and the VEGA
ASCII interfaces, various DIL switches are
provided on VEGACOM 557. Before inserting
VEGACOM 557 into the carrier or the hous-
ing, the DIL switches must be set according
to the user-specific data. The data of these
settings will be effective with the next initiali-
zation (switching on of voltage).
3.1 Adjustment of the PC interface
For adjustment of the RS 232 PC interface in
the front panel of VEGACOM 557, a 6-pole
DIL switch block is located on the basic
board. The PC interface is used for communi-
cation between a PC and VEGACOM 557, by
means of the adjustment software VVO or the
visualisation software VV.
Switch settings on VEGACOM 557
Instrument number
Only relevant when operating two
VEGACOM 557 on the same DISBUS. If
two VEGACOM 557 are operated on the
DISBUS, different instrument numbers
have to be assigned.
Not relevant for operation on LOGBUS.
Automatic modem initialization
In position "ON“ the modem will be initial-
ized automatically when connecting it to the
VEGACOM interface.
Transmission rate
For VVO or VV, the transmission rate must
be set to 9600 baud.
In the following diagram, you see all possible
adjustment possibilities for configuration of
the PC interface.
Data format
Parity can be switched from even to no
parity (note for VVO including version 2.15,
even parity is compulsory).
2 3 4
ON
1
Additional
board
DIL switch
on basic board DIL switch
below additional
board
Basic board
1
ON EDG
2 3 4 5 6
Data format
8 data bits, 1 stop bit, even parity
8 data bits, 1 stop bit, no parity
Instrument number
1. instrument
2. instrument
Automatic modem initialisation
On
Off
Transmission rate (baud)
300 4800
600 9600
1200 19200
2400 38400
Factory setting