Endress+Hauser Tankvision NXA20, Manual

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Tankvision Gauge Link Modbus Task – Function: 4 (read 16 bit registers)
Hauser 11
5 Modbus Task – Function: 4 (read 16 bit regis-
ters)
5.1 Modbus Address
There will be multiple addresses up to 32.
For Enraf Emulation addresses which can be used can either be 1 – 100. Where the RTU
address will be the Enraf Gauge Address, except for RTU address 100 which will represent
Enraf Gauge address 00.
For Emersion TRL/2 Emulation the RTU address will be the Gauge address.
The RTU address corresponds to the Enraf or Emerson level address, found in holding
registers, data offset 0 – 31 (40001 – 40032).
Each map can have up to 1000 registers, Each map will be identical for each RTU address.
Different units can be read determined by how the Enraf or Emersion gauge is configured.
5.2 Primary information
Data
Offset Data Units Units Units Data type
CURRENT DATA
0 DISPLACER POSITION M Decimal FT Decimal Inches Float
1
2 LIQUID LEVEL M Decimal FT Decimal Inches Float
3 – – – – –
4 LIQUID TEMPERATURE Deg C x 10 Deg F x 10 – Signed integer
5 AVERAGE GAS TEMPERATURE Deg C x 10 Deg F x 10 – Signed integer
6 BASE PRESSURE P1 Pa / 100 PSI x 100 – Signed integer
7 LIQUID PRESSURE P2 Pa / 100 PSI x 100 – Signed integer
8 VAPOUR PRESSURE P3 Pa / 100 PSI x 100 – Signed integer
9 OBSERVED TEMPERATURE Deg C x 10 Deg F x 10 – Signed integer
10 WATER LEVEL M Decimal FT Decimal Inches Float
11 – – – – –
12 AVERAGE PROFILE DENSITY Kg/m 3 x 10 API x 100 Lbs/ft 3 x 100 Signed integer
13 PRODUCT LEVEL STATUS – – – Bitmap
14 PRODUCT TEMP STATUS – – – Bitmap
15 WATER LEVEL STATUS – – – Bitmap
16 VAPOUR TEMP STATUS – – – Bitmap
17 BASE PRESSURE P1 STATUS – – – Bitmap
18 LIQUID PRESSURE P2 STATUS – – – Bitmap
19 VAPOUR PRESSURE P3 STATUS – – – Bitmap
20 DENSITY STATUS – – – Bitmap
21 GAUGE STATUS CODE – – – Signed integer
22 SENSOR POSITION STATUS – – – Bitmap
23 SPARE – – – –
24 SPARE – – – –
25 SPARE – – – –