3.
COMMUNICATION .................................................................... 105
3.1
3.2
3.2.1.
3.2.2.
Data Format ...................................................................................................... 105
3.2.3.
3.2.4.
Modbus data Types ........................................................................................... 107
3.2.5.
Modbus function codes ...................................................................................... 107
3.2.7.
3.2.8.
Floating point formats ........................................................................................ 111
3.2.9.
Communications ................................................................................................ 111
3.2.10.
3.2.11.
Diagnostics ........................................................................................................ 113
3.2.12.
4.
4.1
Calibration .................................................................................................... 173
4.1.1.
4.1.2.
4.1.3.
4.1.4.
4.1.5.
5.
TROUBLESHOOTING ............................................................... 186
5.1
Overview ....................................................................................................... 186
5.2
5.2.1.
5.3
Alarms and conditions ................................................................................ 188
5.3.1.
6.
SECURITY ................................................................................. 206
6.1
Security Guidelines ..................................................................................... 206
6.2
Revision 1.0
SMV800 Modbus User's Guide
Page xi