Comdel CX600 Series, Manual

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11
C. Serial Operation (Optional)
The following is a description of the RS-232 ASCII instruction set to operate the CX series of
RF generators. The baud rate is selectable via a DIP switch on the uP control PCB behind the
front panel and is factory set to 9600 baud, N, 8, 1, with echo.
1. All incoming instructions need to be terminated with a carriage return (HEX 'D') except for the ATTENTION
(!) and EXIT (#) commands.
2. The CX interface does not normally require handshaking for it's input because it is interrupt driven with a
1K buffer. Handshake control of it's output is optional.
3. The (PROMPT) response is defined as: <CR><LF> > or HEX D, A, & 3E
Instruction Function Response
! (NO <CR>) ATTENTION (PROMPT)
SPxxxx SET RF POWER (PROMPT)
ER ENABLE RF (PROMPT)
DR DISABLE RF (PROMPT)
P+xx.x SET POWER UPRAMP TIME (PROMPT)
P-xx.x SET POWER DOWNRAMP TIME (PROMPT)
RF READ FORWARD POWER xxxx (PROMPT)
RR READ REFLECTED POWER xxxx (PROMPT)
EE ENABLE ECHO (PROMPT)
DE DISABLE ECHO (PROMPT)
# (NO <CR>) EXIT <CR><LF>BYE
4. Function descriptions:
! - ATTENTION
The '!' command redirects control of the RF generator from either local (front panel) or
analog remote (15 pin 'D' connector) to the serial port (9 pin 'D' connector). There will be
no response from the CX from any other ASCII codes sent while in local or analog
remote modes. Upon receipt of the ASCII '!', the CX will disable RF, set power setpoint
to 0 watts, disable echoing of ASCII characters, and issue a PROMPT. The CX is now
ready to receive ASCII commands via the serial port and will not respond to local or
analog remote commands. This command does not require a carriage return <CR>.
SPxxxx - SET RF POWER
This command provides for forward power setpoint (in watts). The syntax allows up to
four digits (xxxx) with leading zeroes OK.
This command only adjusts the setpoint for the CX and does not enable or disable the
RF power.
ER - ENABLE RF
This command enables RF power at the preprogrammed setpoint SPxxxx (SET RF
POWER). The power out will start at 0 watts and increase linearly to the setpoint over
the period of time as set by P+xx (UPRAMP TIME).