AO8.1
Modbus Registers
Below is a list of available MODBUS registers. The same register numbers are also used by the MIOS-2 protocol.
Modbus Read / Write (0x17) Function
METEL IO modules have implemented the MODBUS function (0x17) Read/Write of Multiple registers. Typically it is required to have two separate requests (and responses) for:
1. Writing of outputs via MODBUS function (0x16) Writing Multiple Registers
2. Reading of inputs via MODBUS function (0x03) Read Holding Registers
This requires a total of 4 frames to be sent over MODBUS. If using 0x17 function only one request is needed for the reading and writing of outputs. This requires a total of 2 frames to be sent over MODBUS.
Default Settings of Communication
Device ID: 1
Baudrate: 115 200
Parity: None
Data bits: 8
Stop bits: 1
| Subject | Type | R/W | Value | Offset | |
|---|---|---|---|---|---|
| Device Identity |
Product Type | u8[3] | R | 1002-04 | |
| Serial Number | u32 | R | 1005-06 | ||
| PCB Version | u32 | R | 1007-08 | ||
| PCB Revision | u16 | R | 1009 | ||
| FW Version Major | u16 | R | 1010 | ||
| FW Version Minor | u16 | R | 1011 | ||
| FW Version - Revision | u32 | R | 1012-13 | ||
| IF#01 Slot State | u16 | R | 0 = N/A 1 = IF#01 not Inserted 2 = IF#01 Inserted, CRC error 3 = IF#01 Inserted, CRC OK |
1021 | |
| IF#01 Product Type | u8[3] | R | 1022-24 | ||
| IF#01 Serial Number | u32 | R | 1025-26 | ||
| IF#01 PCB Version | u32 | R | 1027-28 | ||
| IF#01 PCB Revision | u16 | R | 1029 | ||
| Device Control |
Reset | u16 | RW | 55203 = To Reboot | 1201 |
| Bootloader / Application | u16 | R | 0x00A – Application, 0x00B – Bootloader |
1203 | |
| Restart to Bootloader | u16 | RW | 617 = To Bootloader else = deactivate bootloader |
1204 | |
| Device Status |
Board Power Voltage | u16 | R | 105 = 10,5V | 1311 |
| Board Temperature | u16 | R | -200 = -20,0°C 250 = 25,0°C |
1321 | |
| Subject | Channel | Type | R/W | Value | Offset | |
|---|---|---|---|---|---|---|
| States of Digital Inputs |
Digital Input 1 | DI#01 | bit | R | 0 = inactive 1 = active |
3001 |
| Digital Input 2 | DI#02 | bit | R | 3002 | ||
| Digital Input 3 | DI#03 | bit | R | 3003 | ||
| Digital Input 4 | DI#04 | bit | R | 3004 | ||
| Inputs | DI#16 - DI#01 | u16 | R | 0x0000 - 0x000F | 3001 | |
| Input Mode |
Digital Input 1 | DI#01 mode | u16 | RW | 0 = None 1 = Falling Edge 2 = Rising Edge 3 = Change Edge |
3101 |
| Digital Input 2 | DI#02 mode | u16 | RW | 3102 | ||
| Digital Input 3 | DI#03 mode | u16 | RW | 3103 | ||
| Digital Input 4 | DI#04 mode | u16 | RW | 3104 | ||
| Counter | Digital Input 1 | DI#01 counter | u32 | R | 3201 - 02 | |
| Digital Input 2 | DI#02 counter | u32 | R | 3203 - 04 | ||
| Digital Input 3 | DI#03 counter | u32 | R | 3205 - 06 | ||
| Digital Input 4 | DI#04 counter | u32 | R | 3207 - 08 | ||
| Subject | Channel | Type | R/W | Value | Offset | |
|---|---|---|---|---|---|---|
| Output Value Setting |
Analog Output 1 | AO#01 | s16 | RW | 1000 = 1V 0 = 0V -1000 = -1V |
6001 |
| Analog Output 2 | AO#02 | s16 | RW | 6002 | ||
| Analog Output 3 | AO#03 | s16 | RW | 6003 | ||
| Analog Output 4 | AO#04 | s16 | RW | 6004 | ||
| Analog Output 5 | AO#05 | s16 | RW | 6005 | ||
| Analog Output 6 | AO#06 | s16 | RW | 6006 | ||
| Analog Output 7 | AO#07 | s16 | RW | 6007 | ||
| Analog Output 8 | AO#08 | s16 | RW | 6008 | ||
| Output Value Corretion Setting |
Analog Output 1 offset | AO#01 Par. | s16 | RW | 1000 = 1V 0 = 0V -1000 = -1V |
6101 |
| Analog Output 2 offset | AO#02 Par. | s16 | RW | 6102 | ||
| Analog Output 3 offset | AO#03 Par. | s16 | RW | 6103 | ||
| Analog Output 4 offset | AO#04 Par. | s16 | RW | 6104 | ||
| Analog Output 5 offset | AO#05 Par. | s16 | RW | 6105 | ||
| Analog Output 6 offset | AO#06 Par. | s16 | RW | 6106 | ||
| Analog Output 7 offset | AO#07 Par. | s16 | RW | 6107 | ||
| Analog Output 8 offset | AO#08 Par. | s16 | RW | 6108 | ||
| Output Value Gain Setting |
Analog Output 1 gain | AO#11 Par. | s16 | RW | 1 = 1/100% 0 = 0% -1000 = -1/100% |
6111 |
| Analog Output 2 gain | AO#12 Par. | s16 | RW | 6112 | ||
| Analog Output 3 gain | AO#13 Par. | s16 | RW | 6113 | ||
| Analog Output 4 gain | AO#14 Par. | s16 | RW | 6114 | ||
| Analog Output 5 gain | AO#15 Par. | s16 | RW | 6115 | ||
| Analog Output 6 gain | AO#16 Par. | s16 | RW | 6116 | ||
| Analog Output 7 gain | AO#17 Par. | s16 | RW | 6117 | ||
| Analog Output 8 gain | AO#18 Par. | s16 | RW | 6118 | ||
| Default Value |
Analog Output 1 default | AO#21 Par. | s16 | RW | 1 = 1/100% 0 = 0% -1000 = -1/100% |
6121 |
| Analog Output 2 default | AO#22 Par. | s16 | RW | 6122 | ||
| Analog Output 3 default | AO#23 Par. | s16 | RW | 6123 | ||
| Analog Output 4 default | AO#24 Par. | s16 | RW | 6124 | ||
| Analog Output 5 default | AO#25 Par. | s16 | RW | 6125 | ||
| Analog Output 6 default | AO#26 Par. | s16 | RW | 6126 | ||
| Analog Output 7 default | AO#27 Par. | s16 | RW | 6127 | ||
| Analog Output 8 default | AO#28 Par. | s16 | RW | 6128 | ||
| Subject | Channel | Type | R/W | Value | Offset | |
|---|---|---|---|---|---|---|
| Measured Input Values |
Analog Input 1 | AI#01 | s16 | R | 1000 = 1 V 0 = 0 V -1000 = -1 V |
5001 |
| Analog Input 2 | AI#02 | s16 | R | 5002 | ||
| Analog Input 3 | AI#03 | s16 | R | 5003 | ||
| Analog Input 4 | AI#04 | s16 | R | 5004 | ||
| Input Correction |
Analog Input 1 offset | AI#01 Param. | s16 | R | 1000 = 1 V 0 = 0 V -1000 = -1 V |
5101 |
| Analog Input 2 offset | AI#02 Param. | s16 | R | 5102 | ||
| Analog Input 3 offset | AI#03 Param. | s16 | R | 5103 | ||
| Analog Input 4 offset | AI#04 Param. | s16 | R | 5104 | ||
| Input Gain Correction |
Analog Input 1 gain | AI#11 Param. | s16 | R | 1 = 1/100% 0 = 0% -1000 = 1/100% |
5111 |
| Analog Input 2 gain | AI#12 Param. | s16 | R | 5112 | ||
| Analog Input 3 gain | AI#13 Param. | s16 | R | 5113 | ||
| Analog Input 4 gain | AI#14 Param. | s16 | R | 5114 | ||
Note: To activate the bootloader, it is necessary to write a value 617 into the registry with an offset 1204 and restart the device.
