Table of contents
1
Introduction................................................................................................................................................ 7
1.1
Purpose of this document ..............................................................................................................7
1.2
Orientation aids ..............................................................................................................................7
1.3
Scope of supply .............................................................................................................................8
1.4
1.5
Technical support...........................................................................................................................9
1.6
Further documentation.................................................................................................................10
2
Safety notes............................................................................................................................................. 11
2.1
Safety notes .................................................................................................................................11
3
Description............................................................................................................................................... 13
3.1
Area of application .......................................................................................................................13
3.2
Features .......................................................................................................................................13
3.3
Tasks............................................................................................................................................14
3.4
Structure.......................................................................................................................................15
3.5
Firmware ......................................................................................................................................16
3.6
Bus and master ............................................................................................................................17
4
Assembling .............................................................................................................................................. 19
4.1
4.2
Unpacking ....................................................................................................................................20
4.3
Assembly......................................................................................................................................21
4.4
Connecting ...................................................................................................................................23
4.5
4.6
Disassembly.................................................................................................................................27
5
5.1
MODBUS RTU .............................................................................................................................29
5.1.1
5.1.2
Character frame ...........................................................................................................................30
5.1.3
Function codes.............................................................................................................................31
5.1.4
Exception codes...........................................................................................................................33
5.1.5
5.1.6
Structure.......................................................................................................................................38
5.1.6.1
0x04 .............................................................................................................................................38
5.1.6.2
5.1.6.3
5.1.7
5.1.8
PAC RS485
Manual, 02/2008, A5E02091800B-01
3