(9/72)4.2 Message block format“Message block format” is allied to the “Message Type” in the “Header”.Refer to the section 6 “Message format” for more detail.1 Get current parameterThe controller sends this message when you want to get the status of the monitor.For the status that you want to get, specify the “OP code page” and “OP code”,refer to “Appendix A. Operation code table”.“Message format” of the “Get current parameter” is as follows, Refer to section 5.1 “Get current parameter from a monitor.” for more details.2 Get Parameter replyThe monitor will reply with the status of the requested item specified by the controllerin the “Get parameter message”.“Message format” of the “Get parameter reply” is as follows, Refer to section 5.2 “Get parameter reply” for more details.3 Set parameterThe controller sends this message to change a setting of the monitor.Message format of the “Set parameter” is as follows, Refer to section 5.3 “Set parameter” for more details.4 Set Parameter replyThe monitor replies with this message for a confirmation of the “Set parameter message”.Message format of the “Set parameter reply” is as follows, Refer to section 5.4 “Set parameter reply” for more details.5 Command“Command message” format depends on each command.Usually, this “command message” is used for some non-slider controls and some special operations,such as “Save current settings”, “Get timing report”, “power control”, “Schedule”, etc. Refer toHeader Message Check code DelimiterOP code page OP codeSTX Hi Lo Hi Lo ETXResult OP codepage OP code Type Max value Current ValueSTXHi Lo Hi Lo Hi Lo Hi Lo MSB LSB MSB LSBETXOP codepage OP code Set ValueSTXHi Lo Hi Lo MSB LSBETXResult OP codepage OP code Type Max value Requested settingValue ETXSTXHi Lo Hi Lo Hi Lo Hi Lo MSB LSB MSB LSB