Operating Instructions COMPAX-M / -SRS232 interface1608.6.3 RS232 interfaceYou can communicate with COMPAX via an RS232 interface on a PC. Thefollowing 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 isavailable here).♦ Read and write (password protected) parameters.♦ Transmit control instructions.8.6.3.1 Interface descriptionInterface RS 232Baud rate: 9600* or 4800 (selected with P19)COMPAX 1000SL: fixed setting 9600Word length: 8 bitStop bit: 1Parity: noneHardware handshake: yes (RTS,CTS)Software handshake: XON, XOFF (can be selected using P20)Entry buffer: error string, max. 30 charactersOutput buffer: status string, max. 30 charactersData format: ASCIIEnd sign: CR (carriage return) or CR LF (carriage return, linefeed)* Default setting; simultaneously press the three front plate buttons while switchingon to set COMPAX to 9600 Baud.♦ all displayable ASCII characters♦ any inserted spaces♦ a function sign, if nec. ($, ?, !)♦ CR (carriage return) for storing the command in the intermediate memory. If nofunction signs have been transmitted, the command is accepted and executed ifnecessary (see next page).♦ LF (line feed) has no meaning to COMPAXCOMPAX only receives a command if a previously transmitted commandwas answered with CR LF >.♦ if the syntax is error-free with CR LF > or the required response and CR LF >♦ if there are errors, depending on the contents of P20$ Automatic "Position reached" message1. only applies to POSA and POSR2. COMPAX transmits: $CRLF> when the position is reached., Interpreting and storing commandsCOMPAX stores the instruction in the intermediate memory (capacity: oneinstruction) without executing it.? EchoCOMPAX sends the data received with CRLF>.! Executing commandsWhenever a "!" occurs, the instruction is executed from the intermediatememory.These function signs can be attached to any instruction.Example: POSA 100 $ CR LFCOMPAX moves and responds once position 100 is reached with: $ CR LF >InterfaceparametersCOMPAX receivesCOMPAXresponds:Meaning offunction signs
