Read-Only Memory (ROM) – List

Memory Location and Definition

How to use the tables on this page:

Field Names	Functions
Register Address (Hex)	The two bytes that actually appear in the communication frame. Use this for building frames directly, or for 0-based masters (e.g. CODESYS, pymodbus).
Decimal	The decimal value of the protocol address. For 1-based debug software (e.g. Modbus Poll, Modscan), add 1 to this value.
Master Address (Convention)	The value to enter directly into PLC/HMI configuration screens — Siemens S7-200 SMART / S7-1200, Delta, Weintek, etc.
Register Length	The length of the variable, in units of Registers (2 bytes each).
Memory Content	Description of the function or purpose of the memory.
Data Type	Specifies the format of the transmitted or received data.

Read-Only Memory List

Register Address	Decimal	Master Address	Register Length	Memory Content	Data Type	Remarks
0x0000	0	30001	2	instantaneous flow rate	float 32
0x0002	2	30003	2	instantaneous flow velocity	float 32
0x0004	4	30005	2	totalized flow volume	float 32
0x0006	6	30007	2	analog output in micro-amp	unsigned int 32
0x0008	8	30009	1	error code a	unsigned int 16	First byte is 0, due to no definition.
0x0009	9	30010	1	error code b	unsigned int 16	First byte is 0, due to no definition.
0x000A	10	30011	1	error code c	unsigned int 16	First byte is 0, due to no definition.
0x000B	11	30012	1	error code d	unsigned int 16	First byte is 0, due to no definition.
0x000C	12	30013	1	System Status	unsigned int 16	First byte is 0, due to no definition.
0x000D	13	30014	1	history[1] year & month	unsigned int 16
0x000E	14	30015	1	history[1] day	unsigned int 16
0x000F	15	30016	1	history[1] total method	unsigned int 16
0x0010	16	30017	2	history[1] totalized flow volume	float32
0x0012	18	30019	1	history[2] year & month	unsigned int 16
0x0013	19	30020	1	history[2] day	unsigned int 16
0x0014	20	30021	1	history[2] total method	unsigned int 16
0x0015	21	30022	2	history[2] totalized flow volume	float32
0x0017	23	30024	1	history[3] year & month	unsigned int 16
0x0018	24	30025	1	history[3] day	unsigned int 16
0x0019	25	30026	1	history[3] total method	unsigned int 16
0x001A	26	30027	2	history[3] totalized flow volume	float32
0x001C	28	30029	1	history[4] year & month	unsigned int 16
0x001D	29	30030	1	history[4] day	unsigned int 16
0x001E	30	30031	1	history[4] total method	unsigned int 16
0x001F	31	30032	2	history[4] totalized flow volume	float32
0x0021	33	30034	1	history[5] year & month	unsigned int 16
0x0022	34	30035	1	history[5] day	unsigned int 16
0x0023	35	30036	1	history[5] total method	unsigned int 16
0x0024	36	30037	2	history[5] totalized flow volume	float32
0x0026	38	30039	1	history[6] year & month	unsigned int 16
0x0027	39	30040	1	history[6] day	unsigned int 16
0x0028	40	30041	1	history[6] total method	unsigned int 16
0x0029	41	30042	2	history[6] totalized flow volume	float32
0x002B	43	30044	1	history[7] year & month	unsigned int 16
0x002C	44	30045	1	history[7] day	unsigned int 16
0x002D	45	30046	1	history[7] total method	unsigned int 16
0x002E	46	30047	2	history[7] totalized flow volume	float32
0x0030	48	30049	1	history[8] year & month	unsigned int 16
0x0031	49	30050	1	history[8] day	unsigned int 16
0x0032	50	30051	1	history[8] total method	unsigned int 16
0x0033	51	30052	2	history[8] totalized flow rate	float32
0x0035	53	30054	1	history[9] year & month	unsigned int 16
0x0036	54	30055	1	history[9] day	unsigned int 16
0x0037	55	30056	1	history[9] total method	unsigned int 16
0x0038	56	30057	2	history[9] totalized flow rate	float32
0x003A	58	30059	1	history[10] year & month	unsigned int 16
0x003B	59	30060	1	history[10] day	unsigned int 16
0x003C	60	30061	1	history[10] total method	unsigned int 16
0x003D	61	30062	2	history[10] totalized flow rate	float32
0x003F	63	30064	1	history[11] year & month	unsigned int 16
0x0040	64	30065	1	history[11] day	unsigned int 16
0x0041	65	30066	1	history[11] total method	unsigned int 16
0x0042	66	30067	2	history[11] totalized flow rate	float32
0x0044	68	30069	1	history[12] year & month	unsigned int 16
0x0045	69	30070	1	history[12] day	unsigned int 16
0x0046	70	30071	1	history[12] total method	unsigned int 16
0x0047	71	30072	2	history[12] totalized flow rate	float32
0x0049	73	30074	1	history[13] year & month	unsigned int 16
0x004A	74	30075	1	history[13] day	unsigned int 16
0x004B	75	30076	1	history[13] total method	unsigned int 16
0x004C	76	30077	2	history[13] totalized flow rate	float32
0x004E	78	30079	1	history[14] year & month	unsigned int 16
0x004F	79	30080	1	history[14] day	unsigned int 16
0x0050	80	30081	1	history[14] total method	unsigned int 16
0x0051	81	30082	2	history[14] totalized flow rate	float32
0x0053	83	30084	1	Maximum r value	unsigned int 16
0x0054	84	30085	1	Minimum r value	unsigned int 16
0x0055	85	30086	2	instantaneous flow rate	signed int 32	Value is instantaneous flow rate ×100, rounded to integer
0x0057	87	30088	2	instantaneous flow speed	signed int 32	Value is instantaneous flow speed ×100, rounded to integer
0x0059	89	30090	2	totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x005B	91	30092	2	history[1] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x005D	93	30094	2	history[2] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x005F	95	30096	2	history[3] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0061	97	30098	2	history[4] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0063	99	30100	2	history[5] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0065	101	30102	2	history[6] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0067	103	30104	2	history[7] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0069	105	30106	2	history[8] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x006B	107	30108	2	history[9] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x006D	109	30110	2	history[10] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x006F	111	30112	2	history[11] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0071	113	30114	2	history[12] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0073	115	30116	2	history[13] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer
0x0075	117	30118	2	history[14] totalized flow rate	signed int 32	Value is totalized flow rate ×100, rounded to integer