Parker Products COMPAX-M /-S (L) manual 3 RS232 interface, Interface description

Operating Instructions			COMPAX-M / -S
RS232 interface
8.6.3 RS232 interface
	You can communicate with COMPAX via an RS232 interface on a PC. The
	following functions are available.
	♦	Direct command input and execution in on-line mode.
	♦	Read status values.
	♦	Read and write program data records (the complete stock of commands is
		available here).
	♦	Read and write (password protected) parameters.
	♦	Transmit control instructions.
	8.6.3.1 Interface description
Interface
	Interface		RS 232
parameters	Baud rate:		9600* or 4800 (selected with P19)
			COMPAX 1000SL: fixed setting 9600
	Word length:		8 bit
	Stop bit:		1
	Parity:		none
	Hardware handshake:		yes (RTS,CTS)
	Software handshake:		XON, XOFF (can be selected using P20)
	Entry buffer:		error string, max. 30 characters
	Output buffer:		status string, max. 30 characters
	Data format:		ASCII
	End sign:		CR (carriage return) or CR LF (carriage return, line
			feed)
	* Default setting; simultaneously		press the three front plate buttons while switching
		on to set COMPAX to 9600 Baud.
COMPAX receives	♦	all displayable ASCII characters

♦any inserted spaces

♦a function sign, if nec. ($, ?, !)

♦CR (carriage return) for storing the command in the intermediate memory. If no function signs have been transmitted, the command is accepted and executed if necessary (see next page).

♦LF (line feed) has no meaning to COMPAX

COMPAX only receives a command if a previously transmitted command was answered with CR LF >.

COMPAX		♦	if the syntax is error-free with CR LF > or the required response and CR LF >
responds:		♦	if there are errors, depending on the contents of P20
Meaning of			$	Automatic "Position reached" message
function signs				1. only applies to POSA and POSR
				2. COMPAX transmits: $C	L > when the position is reached.
				R	F
			,	Interpreting and storing commands
				COMPAX stores the instruction in the intermediate memory (capacity: one
				instruction) without executing it.
			?	Echo
				COMPAX sends the data received with CRLF>.
			!	Executing commands
				Whenever a "!" occurs, the instruction is executed from the intermediate
				memory.
		These function signs can be attached to any instruction.
	Example: POSA 100 $ CR LF
			COMPAX moves and responds once position 100 is reached with: $ CR LF >

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