――HXPRM10mnC0005E
CONTENTS
1. INTRODUCTION .........................................................................................................................5
1.1 General Description.............................................................................................................5
1.2 Difference in RS-485, RS-232C...........................................................................................5
1.3 Original Protocol - Basic item about the command..............................................................5
1.4 Basic item about the Modbus RTU protocol.........................................................................6
2. ORIGINAL PROTOCOL - THE RECEPTION OF THE DATA .....................................................7
2.1 Setup command...................................................................................................................7
2.1.1 Setup command list..................................................................................................7
2.1.2 Setting of INPUT RANGE/RECORD SPAN..............................................................8
2.1.3 Setting of Alarm......................................................................................................11
2.1.4 Setting of the Unit...................................................................................................11
2.1.5 Setting of the 1st chart speed.................................................................................11
2.1.6 Setting of the date/time...........................................................................................12
2.1.7 Copying the Setting Data of the channel ................................................................12
2.1.8 Setting of the Printing cycle(Multipoint type only)...................................................12
2.1.9 Setting of the Zone Recording...............................................................................12
2.1.10 Setting of the Partial Compression/Expansion........................................................13
2.1.11 Setting of the Digital Print ON/OFF.........................................................................13
2.1.12 Setting of the Tag Character...................................................................................13
2.1.13 Setting of the Comment Character .........................................................................14
2.2 Control command...............................................................................................................15
2.2.1 Control command list..............................................................................................15
2.2.2 Recording Start/Stop ..............................................................................................16
2.2.3 Manual Print Start/Stop...........................................................................................16
2.2.4 List Print Start/Stop.................................................................................................16
2.2.5 Engineering list Print Start/Stop..............................................................................16
2.2.6 Choice of the display contents................................................................................17
2.2.7 Communication comment print out.........................................................................17
3. ORIGINAL PROTOCOL - DATA TRANSMISSION ...................................................................18
3.1 Getting the Set Value.........................................................................................................18
3.2 Data Reception Example...................................................................................................18
4. ORIGINAL PROTOCOL - NOTES OF COMMUNICATION .......................................................19
4.1 Half-Duplex Transmission..................................................................................................19
4.2 Multiple access ..................................................................................................................19
4.3 Continuation of Opening the Link.......................................................................................19
4.4 Outputting the Status.........................................................................................................19
5. MODBUS RTU PROTOCOL - OVERVIEW ...............................................................................20
5.1 Modbus RTU Protocol........................................................................................................20
5.2 Add new items and Map version........................................................................................20
6. MODBUS RTU PROTOCOL - DATA TRANSMISSION AND RECEPTION...............................21
6.1 Communication Protocol....................................................................................................21
6.2 Function codes ..................................................................................................................21
6.3 Error response...................................................................................................................21
6.4 Reading of input register area............................................................................................22
6.4.1 Reading of input register area ................................................................................22
6.4.2 Input Register Area Map.........................................................................................23
6.5 Reading and writing of the holding register area................................................................26
6.5.1 Reading of the holding register area.......................................................................26
6.5.2 Writing of the holding register area (Single)............................................................27
6.5.3 Writing of the holding register area (Continuation) .................................................28
6.5.4 Holding register area map ......................................................................................29
6.5.5 Holding register area setting range detail...............................................................35
