Changing Between Remote And Local Operation; Using Commands - Ecom Instruments MCAL 4200 Instruction Manual

Serial parameter values:
9600 baud
8 data bits
1 stop bit
no parity
Xon/Xoff
EOL (End of Line) character or CR (Carriage Return) or both
To set up remote operation of the calibrator on the Windows Hyper Terminal, connected to a
COM port on the PC as in Figure 23, use the following procedure:
1. Start Hyper Terminal (located in Accessories / Communications of the Windows Start menu)
2. Select New Connection.
3. For Name enter ASC300. Select the serial port that the unit is connected to.
4. Enter the above information for port settings.
5. Select ASCII setup from File/Properties/Settings and mark these choices:
Echo typed characters locally
Wrap lines that exceed terminal width
6. Select Ok
7. To see if the port works enter *IDN?. This command will return information on the unit.

7.2 Changing Between Remote and Local Operation

There are three modes of operation of the calibrator, Local, Remote, and Remote with
Lockout. Local mode is the default mode. Commands may be entered using the keypad on
the unit or using a computer. In Remote mode the keypad is disabled, and commands may
only be entered using a computer, but choosing [GO TO LOCAL] from the menu on the
calibrator display will restore keypad operation. In Remote with Lockout, the keypad can not
be used at all.
To switch modes proceed as follows:
1. To enable Remote mode, type in the serial command REMOTE at the computer terminal.
2. To enable Remote with Lockout, type in REMOTE and LOCKOUT in either order.
3. To switch back to local operation enter LOCAL at the terminal. This command also turns off
LOCKOUT if it was on. For more information on commands refer to the Remote Commands
section.

7.3 Using Commands

7.3-1 Command types
Refer to the Section on Remote Commands for all available commands.
The calibrator may be controlled using commands and queries. All commands may be
entered using upper or lower case. The commands are divided into the following categories:
Calibrator Commands
Only the calibrator uses these commands. For example:
tells the calibrator to measure voltage on the lower display.
Common Commands
Standard commands used by most devices. These commands always begin with an „*".
For example:
tells the calibrator to return its identification.
LOWER_MEAS DCV
*IDN?
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