PLC-WM4500/WM4500L Expand Serial Command Functional Specifications9/783 Notes for communication1. Expand Serial Command is defined as a single command per line that starts with “C” and endswith carriage return (0x0D).2. There are two types of commands; Functional Execution Commands and Status ReadCommand.- Example of Functional Execution Command: “CF_BRIGHT_032” [CR]- Example of Status Read Command: “CR_BRIGHT” [CR]Note) “_” means a space3. When it takes more than a second to receive a single command, it is not executed.When it takes more than a second to receive carriage return (0x0D) since the reception of thefirst data “C”, it clears the information of the receive buffer.4. When the command pipelining, allow the interval time of no less than100ms after receivingreturn value. (No less than 100 ms)CommandPC Projector “CF_BRIGHT_032” CR Next commandProjector PC “000” CRReturn Value(A few ms - 5s)5. Do not send another command before the reception of the return value; the operation by thecommand is not ensured.However this is not the case when no response is returned after more than 5 seconds.6. It takes about 5 seconds for internal initialization after plugging in AC power. During this time, itcannot process commands. Do not issue any command.4 Notation Convention1. Data from a controller to a projector is represented as COMMAND, and data from a projector toa controller in response to the incoming command is represented as RESPONSE.2. [CR]: Carriage Return CodeCarriage Return code is added to the end of the command.Response is also followed by carriage return code.3. _: Space CodeSpace Code is represented as (_).4. %1: Parameter included in CommandWhen there are more than one parameter, they are defined as %2, %3…5. %%%: Error Code returned from a projectorAcceptable: “000”.Unacceptable: See [7. Error Code Table].