Table of Contents
PREFACE
........................................................................................................................ 2
Table of Contents................................................................................................................ 3
1
Serial Communication ................................................................................................ 4
2
Baud Rate.................................................................................................................... 4
3
Parity bit...................................................................................................................... 4
4
Start and Stop Bits ...................................................................................................... 4
5
Electrical Interface Standards ..................................................................................... 4
6
XVG/eXVG Modbus Communication Default Settings............................................. 5
7
Protocol ....................................................................................................................... 5
7.1
General Modbus Frame....................................................................................... 5
7.2
Modbus Transactions .......................................................................................... 6
7.3
Modbus Register Types ...................................................................................... 6
7.4
Modbus Functions............................................................................................... 7
7.4.1
Read Registers (0x03)................................................................................. 7
7.4.2
Write Single Register (0x06) ...................................................................... 8
7.4.3
Write Multiple Registers (0x10) ................................................................. 9
7.4.4
Diagnostics (0x08) (Loopback) ................................................................ 10
8
Connections............................................................................................................... 10
8.1
RS-232 Connection (for XVG/eXVG with RS-232 interface) ......................... 11
8.2
RS-485 Connection (for XVG/eXVG with RS-485 interface) ......................... 11
9
XVG/eXVG Modbus Parameters ............................................................................. 11
9.1
Setup Parameters............................................................................................... 11
9.1.1
General Setup Parameters ......................................................................... 12
9.1.2
Position Interpolation Parameters............................................................. 17
9.1.3
Stroke Position Parameters ....................................................................... 19
9.1.4
Pressure Ratio Parameters ........................................................................ 19
9.1.5
CdA-Pressure Ratio Parameters................................................................ 20
9.1.6
Flow Limiting Mode Parameters .............................................................. 23
9.2
Real Time Parameters ....................................................................................... 24
10
Write Modbus Application ................................................................................... 31
10.1
Real-Time Status & Parameters Upload Procedure.......................................... 32
10.2
Accessing Fault Records Procedure.................................................................. 33
10.3
Change Gas Constant R and K Procedure ........................................................ 34
10.4
Download Parameters ....................................................................................... 35
10.5
Re-Assign Device Address Procedure .............................................................. 35
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