Setting of SER. 1 and SER. 2
to TTY or RS232
The interfaces SER. 1 and SER. 2 can be set to TTY or
RS232 using DIP switches on the PCPU-2.
Interface SER. 2
Switch On/off Meaning
DIP 2
DIP 2
OFF
ON
TTY
RS232
Interface SER. 1
Switch On/off Meaning
DIP 4
DIP 4
OFF
ON
TTY
RS232
Setting of TTY to active/passive
The interfaces SER. 1 and SER. 2 can be operated as
TTY interfaces. The plug-in jumpers X8 to X11 can be
used to set the current source separately for the transmit
and receive loops. Also refer to the register Networking:
Various serial interfaces.
Interface Jumpers
SER. 1
SER. 1
SER. 2
SER. 2
Transmitter
Receiver
Transmitter
Receiver
X8
X9
X10
X11
The delivered status for both interfaces is passive. This
setting also acts on the terminals for interfaces A and B.
Setting of SER. 1
for local printer or ChromLAN
If the driver UNIDRV1 is loaded for the interface
SER. 1, a DIP switch on the PCPU-2 can be used to set
whether a local message printer is connected to this
interface or whether a ChromLAN is to be operated
there.
Switch
On/off
Meaning
DIP 3
DIP 3
OFF
ON
Local printer
ChromLAN
Adjustment of transmission rate
(baud rate)
The transmission rates can be adjusted in three different
manners:
Control unit interfaces
The interfaces com1: and com2: of the control unit can
be adjusted using the software installation program.
Refer to The software: Parameterization of control unit.
PCPU-2 interfaces SER. 1, 3, 4
The baud rates can only be adjusted using the configu-
ration software. A matching interface driver must be
programmed.
PCPU-2 interface SER. 2
The baud rate can only be adjusted on the DIP switch
on the PCPU-2. The DIP switches are scanned by the
driver software.
Switch On/off Meaning
DIP 1
DIP 1
OFF
ON
9600 baud
4800 baud if TTY
38400 baud if RS232
IMPORTANT:
When delivered, the DIP switch is set to
00000000. Switches 5 to 8 must always be
switched off in normal operation. Only positions
xxxx0000 are permissible when operating the
chromatograph.
SER. 2
SER. 1
SER. 3
SER. 4
DIP
ON
Station x1
Station x16
switch
X6
X7
X 9
X 8
X11
X10
18
aktive passive
11
ChromLAN networks
3VERDRAH.CHP, Stand Dezember 22, 1999
23
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