Texas Instruments 990 User Manual page 203

Applications Utilities
transmission. In the DXlO, it is the time spent in
moving data from the user task buffer to the
communications buffer, servicing the message at each
software level, and queuing it down to the line level.
It is dependent on the existing DXlO workload.
*
CLOCK TIMES. These are the times that the test
completed (FINISH) and the time the communication
package was initialized or reset (WARM-START).
5.6 ACTIVATE/DEACTIVATE UTILITIES
Activate and deactivate utilities are available to take a
secondary station offline or bring one online. To activate a
station, enter the SCI command ACT at a primary station terminal
and identify the station to be activated by its network ID, as
shown in the following example:
[ ] ACT
ACTIVATE A STATION
STATION NUMBER: <network ID>
After the station has been identified, it is polled during the
next polling sequence. If the station. is operational, it
responds to the polls sent to it
by
the primary station. If it
is not operational, it cannot respond to the polls sent. In this
case, the primary station polling time-out expires and an error
message is written to the system log indicating that the station
is down. Activating a station is a primary station process only.
If the specified secondary station is down after the ACT command
is entered, it may indicate that the station requires
downloading.
To deactivate a station, enter the SCI command DEACT at a primary
station terminal and identify the station to be deactivated by
its network 10, as shown in the following example:
[ ] DEACT
DEACTIVATE A STATION
STATION NUMBER: <network ID>
The deactivated station is now omitted from the primary station
polling sequence. It is placed in the disconnect mode, and
polling cannot resume until the station is reactivated by the ACT
command. A download operation cannot be started to a station in
the deactivated state. To start a download operation, execute
the ACT command first and then the DOWNLOAD command (see
paragraph 5.3).
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