6.1.3 System [backlight]..............................................................................................24
6.1.4 Reduce brightness..............................................................................................25
6.1.5 touch screen........................................................................................................26
6.2< system information > page.......................................................................................26
7.
communication protocol
(modbus).............................................................................28
7.1.The overall design of the instruction...........................................................................28
7.1.1 Overall design: read data frame structure (request), 8 length as an example.........28
7.2 Time command (set command with 10).....................................................................28
7.2.1 Set time...................................................................................................................28
7.2.2 Response command...............................................................................................29
7.2.3 Reading time...........................................................................................................29
7.2.4 Response read time instruction...............................................................................29
7.3 Sensor type (not all instruments)................................................................................29
7.3.1 Read sensor type....................................................................................................29
7.3.2 Response directives................................................................................................30
7.4 The condition of the instrument..................................................................................30
7.4.1 Read the state of the instrument.............................................................................30
7.4.2 In response to the state of the reading instrument..................................................30
7.5 Instrument alarm upper and lower limit......................................................................31
7.5.1 Set the upper and lower limit (no decimal point).....................................................31
7.5.2 Response command...............................................................................................31
7.5.3 Read upper and lower limits....................................................................................31
7.5.4 Response command...............................................................................................31
7.6 unit.............................................................................................................................32
7.6.1 Setting unit..............................................................................................................32
7.6.2 Response command...............................................................................................33
7.6.3 Reading units..........................................................................................................33
7.6.4 Response command...............................................................................................33