Camus Hydronics DynaMax DMH081 Installation, Operation And Service Manual page 69

Table 34: Modbus Configuration
Modbus Configuration
Protocol
Default slave address
Supported Modbus
commands
Baud Rate
Data Length
Parity
Stop Bits
Physical Layer
Modbus 1A
connection
Mobdus 1B
connection
Table 35: Modbus Read Only Registers
Read Only Registers
Parameter
Item Index
Name
Word Byte
0 High
0 STATE
Byte
0 Low
1 STATUS
Byte
2 High ERROR_NUMB
2
Byte ER
2 Low
3 SYSTEM_TEST
Byte
4 High
4 Supply Temp
Byte
4 Low
5 RETURN_TEMP
Byte
6 High
6 DHW_TEMP
Byte
6 Low
7 FLUE_TEMP
Byte
8 High FLAGS (RT and
8
Byte SWL)
8 Low RAM_CH_SETP
9
Byte OINT
10 High APPLIANCE_TY
10
Byte PE
10 Low CONTROL_CON
11
Byte FIG_BYTE
12 High
12 CH_MODE
Byte
12 Low
13 DHW_MODE
Byte
14 High
14 CH_SETPOINT
Byte
14 Low DHW_SETPOIN
15
Byte T
The low byte of the word contains possible values of the
Status parameter.
Modbus RTU
0x01 (settable with LabVision)
Read holding registers (0x03)
Write single holding register
(0x06)
9600 bps
8
None
1
RS-485 (two wire)
J7-1 (+)
J7-3 (-)
DM Link device and holding registers
RC RC
MN Standal Cascade
...
(100) one Master
(200) 1 (201)
0x0000 0x0010 0x0020 ...
0x0000 0x0010 0x0020 ...
0x0002 0x0012 0x0022 ...
0x0002 0x0012 0x0022 ...
0x0004 0x0014 0x0024 ...
0x0004 0x0014 0x0024 ...
0x0006 0x0016 0x0026 ...
0x0006 0x0016 0x0026 ...
0x0008
0x0008
0x000A
0x000A
0x000C
0x000C
0x000E
0x000E
STATUS
Dec. Hex
0 0x00
14 0x0E
10 0x0A
15 0x0F
16 0x10
17 0x11
18 0x12
19 0x13
20 0x14
21 0x15
The high byte of that word contains possible values of the
State parameter.
RC
Cascade
STATE
Slave 8
Dec.
(208)
0
0x0090
1
0x0090
2
0x0092
3
0x0092
4
0x0094
5
0x0094
6
0x0096
7
0x0096
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Table 36: Ignition Module Status
MN STATUS
State Name
Standby (Waiting for
STANDBY
demand)
BLOCK Error Handling
ALARM Error Handling
FROST_PROTECT Frost Protection Handling
CH Central Heating Demand
RESET_STATE Initializing
STORAGE Storage Tank Demand
DHW Demand (Combination
TAP
Models)
Pre-Heat Demand
PRE_HEAT
(Combination Models)
Pre-Heat Demand (Storage
STORE_WARM_HOLD
Tank)
Table 37: Ignition Module State
Ignition Module States
State Name
Hex
0x00 RESET_0 Initializing
0x01 RESET_1 Initializing
0x02 STANDBY_0 Standby (Waiting for demand)
0x03 SAFETY_ON Initiating boiler demand
0x04 SAFETY_OFF Initiating boiler demand
0x05 PRE_PURGE Initiating boiler demand
0x06 PRE_PURGE_1 Initiating boiler demand
0x07 IGNIT_0 Initiating boiler demand
0x08 IGNIT_1 Initiating boiler demand
0x09 BURN_0 Handle boiler demand
0x0A POST_PURGE_0 Ending boiler demand
0x0B POST_PURGE_1 Ending boiler demand
Handling CH demand without
0x0C PUMP_CH_0
boiler demand
0x0D PUMP_CH_1 Post Pump after CH demand
Handling DHW demand
0x0E PUMP_HW_0
without boiler demand
Post Pump after DHW
0x0F PUMP_HW_1
demand
0x10 ALARM_1 Error Handling
0x11 ERROR_CHECK Error Handling
0x12 BURNER_BOOT Controller Restart
0x13 CLEAR_E2PROM_ERROR Error Handling
0x14 STORE_BLOCK_ERROR Error Handling
0x15 WAIT_A_SECOND Error Handling
Description
Description
64