Remote Control; Remote Commands - TTI TG420 Manual Del Usuario

The RS232 interface permits full remote control using the optional PC420 Windows software.
The software permits either direct real–time control via virtual front–panel controls or, more
usefully, the down–loading of complete set–ups or sequences of set–ups. Full details are give in
the Help file of the PC420 software.
Connection between the RS232 port and the PC's serial port is made using a 9–way D–type to
D–type cable with all connections made, see Connections section.

Remote Commands

For users wishing to write their own remote control software the principle of operation is to
emulate the keystrokes and rotary control changes required to achieve the desired set–up from
the default configuration. The commands and default configuration are listed below.
Commands
All commands are 7–bit ASCII characters as follows:
@ Rotary decrement by 50 clicks
A Rotary decrement by 1 click
B Frequency entry; 5 ASCII characters ('0' to '9') must follow 'B' to set the required frequency.
C Key (AMPLITUDE)
D Rotary increment by 50 clicks
E Rotary increment by 1 click
F Key (OPERATE)
G Key (SYMMETRY)
H Increment program step number
I Decrement program step number
J Key (EDIT)
K Key (OFFSET)
L LOAD Program step
M Default (see default configuration)
N Key (FUNCTION)
O Key (FREQUENCY)
Each command needs to be allowed execution time before a new command may be sent.
Following a default command allow 1s before the next command, following any other command
allow 20ms. Serial commands may be missed while the unit is in frequency lock.

Remote Control

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