ABB M101 Manual page 4

8. Function Codes .........................................................................................................................39
8.1. Message Format........................................................................................................................ 39
8.1.1.
8.1.2.
8.2. Function Code 02 - Read Input Status ................................................................................. 40
8.3. Function Code 03 - Read Holding Registers ....................................................................... 40
8.4. Function Code 04 - Read Input Registers ........................................................................... 40
8.5. Data Presentation for Function Code 03 and 04 ................................................................41
8.6. Function Code 06 - Preset Single Register ..........................................................................41
8.7. Function Code 08 - Preset Single Register ..........................................................................41
8.8. Function Code 16 - Preset Multiple Register ...................................................................... 42
8.9. Restrictions ................................................................................................................................ 42
8.9.1.
8.9.2.
8.10. Exception Code Handling ........................................................................................................ 43
9. Data Mapping ........................................................................................................................... 44
9.1. User Data Map ........................................................................................................................... 44
9.2. Default Data Map ...................................................................................................................... 44
9.2.1.
9.2.2.
9.2.3.
9.2.4.
9.2.5.
9.2.6.
9.2.7.
9.2.8.
9.2.9.
10. Troubleshooting and Maintenance ........................................................................................ 60
10.1. MNS Digital Gateway LED Indication .................................................................................... 60
10.2. Troubleshooting ........................................................................................................................ 63
II
Query Messages ...................................................................................................... 39
Response Messages ............................................................................................... 39
General....................................................................................................................... 42
Modbus RTU ............................................................................................................. 42
Monitoring (Inputs from M10x-M) ....................................................................... 44
Monitoring with Function Code 02 ..................................................................... 45
Monitoring with Function Code 03 and 04 ....................................................... 50
Extended Status Description ................................................................................ 51
Control Commands ................................................................................................. 54
Switching Commands ............................................................................................ 55
Switching Commands - Bit Control ..................................................................... 56
Redundant MNS Digital Gateway Modbus Data ............................................... 57
Control Access ......................................................................................................... 58
TAB L E O F CO N TE NTS