Base+ Modbus Register Map

Legend

Type	Description
RO / RW	Read Only / Read Write
xN	Multiplier used for value conversion
	Register supports data transmission via Fast Modbus events

Device Description (For Internal Use Only).

Dec Addr	Hex Addr	Format	Access	Type	Description	Values
16	0x0010	U8	RO	Input	Device Type (Cloud)	“-”
17	0x0011	U8	RO	Input	HW Version (Cloud)	“-”
18	0x0012	U16	RO	Input	Firmware Version	“-”
19	0x0013	U16	RO	Input	Board Version	“-”

Service Registers (Communication Parameters, Factory Reset, Reboot). 0x1000 - 0x10FF (256 registers).

Dec Addr	Hex Addr	Format	Access	Type	Description	Values
110	0x006E	U16	RW	Holding	Modbus communication baud rate	12-1200, 24-2400, 48-4800, 96-9600, 192-19200, 384-38400, 576-57600, 1152-115200 bps
111	0x006F	U8	RW	Holding	Parity bit	0 - None, 1 - Odd, 2 - Even
112	0x0070	U8	RW	Holding	Number of stop bits	1, 2
114	0x0072	U8	RW	Holding	Continuous register reading mode with gaps	0 - Disabled, 1 - Enabled, 2 - Retained after reboot
128	0x0080	U8	RW	Holding	Modbus network address	0x01 - 0xF7

New communication settings take effect after device reboot.

Dec Addr	Hex Addr	Format	Access	Type	Description	Values
200 219	0x00C8 0x00DB	U8	RO	Input	Device Model	WK-BASE+ (1 character per register)
250 264	0x00FA 0x0108	U32	RO	Input	Firmware Version String	1.5 and higher (1 character per register)
290 300	0x0122 0x012C	U32	RO	Input	Firmware Signature	apt.3g (1 character per register)
270 271	0x010E 0x010F	U32	RW	Holding	Fast Modbus Serial Number (32-bit)	“-”
4112	0x1010	Bool	RW	Holding	Enter bootloader mode (settings preserved)	Any non-zero value written to the register places the device into bootloader mode for two minutes.
4113	0x1011	Bool	RW	Holding	Device reboot	0 - No action, 1 - Reboot
4114	0x1012	Bool	RW	Holding	Reset communication settings	0 - No action, 1 - Reset
4115	0x1013	Bool	RW	Holding	Reset settings except communication settings	0 - No action, 1 - Reset
4116 4127	0x1014 0x101F	“-”	“-”	“-”	Reserved gap between registers	“-”
4128 4129	0x1020 0x1021	U32	RW	Holding	UTC Time in UNIX format (32-bit)	Seconds
4130 4131	0x1022 0x1023	U32	RO	Input	Device uptime since power-on	Seconds
4132 4133	0x1024 0x1025	U32	RO	Input	Time until anti-seizure operation	Seconds; test register, may be omitted from user documentation

Main Device Parameters.

Dec Addr	Hex Addr	Format	Access	Type	Description	Values
512 513	0x0200 0x0201	U32	RO	Input	Status Register	Upper 16 bits Lower 16 bits
514 515	0x0202 0x0203	U32	RO	Input	Alarm Counter	Upper 16 bits Lower 16 bits
516 517	0x0204 0x0205	U32	RO	Input	Valve Channel 1 Open/Close Count	Upper 16 bits Lower 16 bits
561	0x0231	Bool	RW	Holding	Shut-off Valve Control	1 - Valve Open, 0 - Valve Closed
562	0x0232	Bool	RW	Holding	Wet Cleaning Mode	1 - Wet Cleaning Mode, 0 - Normal Mode
563	0x0233	Bool	RW	Holding	Audible Alarm Enable	1 - Enabled, 0 - Disabled
564	0x0234	Bool	RW	Holding	Alarm Mode	1 - Alarm, 0 - Normal Mode Writing 1 has no effect, 0 - Exit Alarm Mode
565	0x0235	Bool	RO	Input	External Contact State	1 - Closed, 0 - Open
566	0x0236	Bool	RO	Input	Anti-Seizure Operation Active	1 - Currently Running, 0 - Not Running
576	0x0240	U16	RW	Holding	Anti-Seizure Protection Interval	7 - 28 Days

New communication settings (address, baud rate, stop bits, and parity) take effect only after a device reboot.

Disabling the alarm via register 0x0234 is possible only if the leak sensor no longer reports a leak. Otherwise, the alarm remains active, but the audible indication is muted until the next alarm event.

Registers 0x010E and 0x010F describe the device serial number used during Fast Modbus arbitration when scanning the network. In the event of serial number conflicts, it can be overridden by writing any value in the range from 1 to 268,435,455 (0x00000001 - 0x0FFFFFFF). A value of 0 means “use the default serial number”.

Registers 0x1024 and 0x1025 are used to test the anti-seizure function. They allow monitoring the current stage of device operation and indicate the remaining time until the anti-seizure function is expected to activate.

Registers 0x00C8 - 0x00DB contain the ASCII codes of the device model. For the BASE+ leak protection device this string is "WK-BASE+".

Firmware version register 0x0012 consists of two parts: major and minor version numbers (for example, version 1.0 consists of major version 1 and minor version 0). Accordingly, the register is divided into two bytes:

Lower byte — minor version
Upper byte — major version

Status Register Description (0x0200 - 0x0201)

Bit No.	Description	Value
31-7	Reserved	“-”
6	Shut-off Valve State	0 – Valve Closed, 1 – Valve Open
5	Wet Cleaning Mode	0 – Wet Cleaning Mode Disabled, 1 – Wet Cleaning Mode Enabled
4	Audible Alarm State	0 – Audible alarm disabled during alarm events, 1 – Audible alarm enabled during alarm events
3	Anti-Seizure Protection	0 – Not Running, 1 – Running
2	External Contact State	0 – Contact Open, 1 – Contact Closed
1	Leak Sensor State	0 – Sensor Dry, 1 – Sensor Wet
0	Device State	0 – Normal operation, no leak detected; 1 – Alarm, leak detected