Fluke 5790A, Руководство оператора

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5790A
Operators Manual
5-6
5-7. Exceptions for Serial Remote Control
When you use the RS-232-C port to remotely control the 5790A, either interactively with
a terminal or under computer control, operation is the same as when you use an IEEE-488
controller connected to the IEEE-488 port for control, with the following exceptions:
1. Control/C performs the same function as DCL (Device Clear) or SDC (Selected
Device Clear).
2. The EOL (End of Line) input terminator is Carriage Return (Control/M) or Line
Feed (Control/L). All output lines are terminated by the terminator programmed
in a setup menu, or set using the remote command SP_SET. This setting applies
to all lines, including those with the *PUD command (see number 4).
3. Control/R echoes to the port a Carriage Return, a Line Feed, and any
uncompleted remote command entered. This allows you to see a copy of
whatever has been typed in since the last command.
4. For the *PUD (Protected User Data) and RPTSTR commands, which store
characters for later recall, the serial remote interface does not store the characters
listed below. These characters are processed as described above, so they cannot
be a part of the *PUD command, except if "C\" notation is used within strings.
The *PUD command terminates with Line Feed or Carriage Return, the same as
all other serial remote commands.
•
^C (Control/C)
•
^J (Line Feed)
•
^M (Carriage Return)
•
^R
•
^S (XOFF)
•
^Q (XON)
•
^B (Backup)
•
^P (Serial Poll)
•
^D (Cmd List)
•
ESC
5. The status registers still behave as described in this section, but there is no SRQ
(Service Request) bus line to assert. For the equivalent of SRQ, refer to the
remote commands SRQSTR and SRQSTR?
6. There are seven special commands available only for serial remote control:
REMOTE, LOCKOUT, LOCAL, SPLSTR, SPLSTR?, SRQSTR, and SRQSTR?.
These are described with the other commands in Section 6.
5-8. Changing between Remote and Local Operation
In addition to local mode (front panel operation) and remote, the 5790A can be placed in
a local lockout condition at any time by command of the controller. Combined, the local,
remote, and lockout conditions yield four possible operating states described as follows.
5-9. Local State
The 5790A responds to local and remote commands. This is normal front panel
operation. All remote commands are allowed to execute.
5-10. Local with Lockout State
Local with lockout is identical to local, except the 5790A will go into the remote with
lockout state instead of the remote state when it receives a remote command. The local