Technical description
6 Communication
6.1 Communication ports
VM259.EN007
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6.1.1.
Local port
The local port may have two connectors:
On the front panel
On the rear panel (See chapter 8)
Only one can be used at a time.
NOTE! The local port functionality may be available via connector X9 or X10
depending on the type of communication modules and DIP switch
settings (see chapter 8).
NOTE! When the VX003 cable is inserted to the front panel connector it
activates the front panel port and disables the rear panel local port by
connecting the DTR pin 6 and DSR pin 4 together. See Figure 6.1-1.
Protocol for the local port
The front panel port is always using the command line protocol
for VAMPSET regardless of the selected protocol for the rear
panel local port.
If other than "None" protocol is selected for the rear panel local
port, the front panel connector, when activated, is still using
the plain command line interface with the original speed,
parity etc. For example if the rear panel local port is used for
remote VAMPSET communication using SPA-bus default
9600/7E1, it is possible to temporarily connect a PC with
VAMPSET to the front panel connector with the default
38400/8N1. While the front panel connector is in use, the rear
panel local port is disabled. The communication parameter
display on the local display will show the active parameter
values for the local port.
Physical interface
The physical interface of this port is RS-232, but the connector
type depends on the option module type.