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CONTENTS
PREFACE
Chapter 1 INSTALLING THE RS-422-A INTERFACE
1.1 Interface Specifications ................................................................................................................ 1-1
1.2 Interface Terminal ........................................................................................................................ 1-2
1.2.1 Terminal Assignment ......................................................................................................1-2
1.2.2 Cable Termination ..........................................................................................................1-2
1.3 Communication Wiring ................................................................................................................ 1-3
1.4 Data Configuration ....................................................................................................................... 1-4
1.4.1 Start-stop (Asynchronous) Communication ................................................................... 1-4
1.4.2 Text ................................................................................................................................. 1-4
1.4.3 Input Buffer..................................................................................................................... 1-5
1.4.4 Buffer Overflow .............................................................................................................. 1-5
1.5 Setting up the RS-422-A Communication Interface..................................................................... 1-6
Chapter 2 RECEIVING FUNCTIONS
2.1 General Rules for Commands....................................................................................................... 2-1
2.2 Program Set Commands ............................................................................................................... 2-2
2.2.1 List of Program Set Commands ...................................................................................... 2-2
2.2.2 Setting the Range and Scale............................................................................................ 2-2
2.2.3 Setting Alarms ................................................................................................................ 2-4
2.2.4 Setting the Unit ............................................................................................................... 2-5
2.2.5 Setting the Waveform Span Rate (TIME/DIV) .............................................................. 2-5
2.2.6 Setting the Clock ............................................................................................................. 2-5
2.2.7 Copying the Channel Settings......................................................................................... 2-5
2.2.8 Setting the Discrete (ZONE) Display ............................................................................. 2-6
2.2.9 Setting the Partial Expanded Display ............................................................................. 2-6
2.2.10 Setting the Scale Value Indication On/Off (DISP_SCALE, only for VR200
with style number 1 or lower) ......................................................................................... 2-6
2.2.11 Setting the Tag .................................................................................................................. 2-6
2.2.12 Setting the Trip Level ....................................................................................................... 2-7
2.2.13 Setting the Floppy Disk Format Type (FD, only for VR202/VR204).............................. 2-7
2.2.14 Setting the Data File Name (FILE)................................................................................... 2-7
2.2.15 Setting the LCD Brightness and LCD Saver (LCD) ........................................................ 2-8
2.2.16 Setting the Summer/ Winter Time (DST)......................................................................... 2-8
2.2.17 Message setting (MESSAGE, only for the VR 200 with style number 2 or higher) ...... 2-8
2.2.18 Setting of the Number of Divisions of the Bar Graph Scale
(BAR_SCALE_DIV, for the VR 200 with style number 2 or higher) ..........................2-8
2.2.19 ON/OFF Setting of the Waveform Span Rate Display, ON/OFF Setting of the Message
Menu (SPECIAL, for the VR 200 with style number 2 or higher) ................................2-8
2.2.20 Waveform Display and Scale Display Setting
(DISP_WAVE, for the VR 200 with style number 2 or higher) ..................................... 2-9
2.3 Program Control Commands ...................................................................................................... 2-10
2.3.1 List of Program Control Commands ............................................................................. 2-10
2.3.2 Standard Screen Call ..................................................................................................... 2-10
2.3.3 Alarm Acknowledge ..................................................................................................... 2-10
2.3.4 Initializing the Data Memory ........................................................................................ 2-10
2.3.5 Writing a Time-axis Mark and Raising an Event Trigger ............................................ 2-10
2.3.6 Designating the Sequence of Byte Output (for Binary Output) .................................... 2-10
2.3.7 Selecting the Output Data ............................................................................................. 2-11
2.3.8 Selecting the Output Format for Measured Data .......................................................... 2-11
2.3.9 Selecting Channels for Request for Setting Parameters,
Unit/Decimal Point Information ...................................................................................2-11
2.3.10 Loading the SET Configuration File............................................................................. 2-11
2.3.11 Saving the SET Configuration File ............................................................................... 2-11
2.3.12 Message Writing (for the VR 200 with style number 2 or higher) ............................... 2-12
2.3.13 Display Switching (for the VR 200 with style number 2 or higher) ............................. 2-12