Signal Output
INET configuration
86
Figure 5•8shows displays resulting from the key sequence:
CLEAR
.
3
ENTER
Switching between Global and Local
With regard to the INET function at the HP 5890, there are two
operating modes: global or local.Inglobal mode (default mode),
HP 5890
START
and
STOP
keys, when pressed, affect other devices on the
INET loop. In local mode, however, pressing
START
or
STOP
at the
HP 5890 affects only the HP 5890. A run may be started or stopped at the
HP 5890 without affecting other devices on the INET loop.
In local mode, note that the HP 5890 remains part of the INET system;
it reports its readiness to the system and pressing
START
and
STOP
keys on other devices on the INET loop (e.g., the controller) will affect
HP 5890 operation.
Once in CONFIGURE NETWORK, pressing
ON
or
OFF
switches,
respectively, between global or local mode shows resulting displays as in
Figure 5•9.
ACTUAL SETPOINT
LOCAL ADDR: 8,31
ACTUAL SETPOINT
GLOBAL ADDR: 8,31
INET GLOBAL/LOCAL Displays
Figure 5-9
An example of where having the HP 5890 in local mode might be useful
is in the case of conditioning a column: the HP 5890 may be started or
stopped as desired without affecting other devices on the INET loop.
