device library

Eliwell EW 4800 series controller

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

pointaddress (0-based)typescaleunit
Analogue input (control)298I160.1°C/°F
contatore autorepeat408U161
Analogue output1486U161
Sequence program number active1503U161
Sequence program step number active1504U161
SP1 - Regulation set point 116392I160.1°C/°F
OS1 - Offset on set point 116394I160.1°C/°F
db1 - Tripping band above set point 116396U160.1°C/°F
dF1 - Differential of set point 116398I160.1°C/°F
HS1 - Maximum value settable for set point 116400I160.1°C/°F
LS1 - Minimum value settable for set point 116402I160.1°C/°F
HA1 - Max. alarm regulator 116404I160.1°C/°F
LA1 - Min. alarm regulator 116406I160.1°C/°F
SP2 - Regulation set point 216408I160.1°C/°F
OS2 - Offset on set point 216410I160.1°C/°F
db2 - Tripping band above set point 216412U160.1°C/°F
dF2 - Differential of set point 216414I160.1°C/°F
HS2 - Maximum value settable for set point 216416I160.1°C/°F
LS2 - Minimum value settable for set point 216418I160.1°C/°F
HA2 - Max. alarm regulator 216420I160.1°C/°F
LA2 - Min. alarm regulator 216422I160.1°C/°F
Sdi - Automatic back swing of Soft start function16428U160.1°C/°F
Afd - Alarm differential16430U160.1°C/°F
PA1 - Value of password 116432U161
PA2 - Value of password 216434U161
CA1 - Probe calibration16436I160.1°C/°F
LdL - Minimum value that can be displayed16438I160.1°C/°F
HdL - Maximum value that can be displayed16440I160.1°C/°F
dut - PID duty cycle in manual mode16442I160.1
set01 - Set point for step 0 of program 116510I160.1°C/°F
set11 - Set point for step 1 of program 116512I160.1°C/°F
set21 - Set point for step 2 of program 116514I160.1°C/°F
set31 - Set point for step 3 of program 116516I160.1°C/°F
set41 - Set point for step 4 of program 116518I160.1°C/°F
set51 - Set point for step 5 of program 116520I160.1°C/°F
set61 - Set point for step 6 of program 116522I160.1°C/°F
set71 - Set point for step 7 of program 116524I160.1°C/°F
set02 - Set point for step 0 of program 216526I160.1°C/°F
set12 - Set point for step 1 of program 216528I160.1°C/°F
set22 - Set point for step 2 of program 216530I160.1°C/°F
set32 - Set point for step 3 of program 216532I160.1°C/°F
set42 - Set point for step 4 of program 216534I160.1°C/°F
set52 - Set point for step 5 of program 216536I160.1°C/°F
set62 - Set point for step 6 of program 216538I160.1°C/°F
set72 - Set point for step 7 of program 216540I160.1°C/°F
LAO - Lower limit of analogue output16542I160.1
HAO - Upper limit of analogue output16544I160.1
SLOH - Minimum saturation of PID output H16710U160.1
SHIH - Maximum saturation of PID output H16712U160.1
bPH - PID proportional band H16714U160.1°C/°F
tiH - PID integral time H16716U161secs
tdH - PID derivative time H16718U161secs
ttH - Integral time for PID windup anti-reset H16720U161secs
biAH - PID static polarization H16722I160.1
PEdH - Partial period with PID duty cycle H16724U161sec
SLOC - Minimum saturation of PID output C16728U160.1
SHIC - Maximum saturation of PID output C16730U160.1
bPC - PID proportional band C16732U160.1°C/°F
tiC - PID integral time C16734U161secs
tdC - PID derivative time C16736U161secs
ttC - Integral time for PID windup anti-reset C16738U161secs
biAC - PID static polarization C16740I160.1
PEdC - Partial period with PID duty cycle C16742U161secs
APLH - Amplitude of oscillation in auto-tuning mode H16746U160.1°C/°F
biAtH - Relay polarization in auto-tuning mode H16748U160.1
APrH - Relay amplitude in auto-tuning mode H16750U160.1
AHrH - Relay hysteresis in auto-tuning mode H16752U160.1°C/°F
APLC - Amplitude of oscillation in auto-tuning mode C16762U160.1°C/°F
biAtC - Relay polarization in auto-tuning mode C16764I160.1
APrC - Relay amplitude in auto-tuning mode C16766U160.1
AHrC - Relay hysteresis in auto-tuning mode C16768U160.1°C/°F
Out 2 status32802U161
Out 1 status32811U161
Digital input status33048U161
Alarm status33051U161
Autotuning status33057U161
Control 3305833058U161
Control 3305933059U161
Setpoint status33060U161
Sequence program control33063U161
Cont. Cycle status33073U161
Status 3328533285U161
Out Buzzer34283U161
Failed autotuning34552U161
del01_m - Enabling delay in minutes for step 0 of program 149214U161min
del01_h - Enabling delay in hours for step 0 of program 149215U161hours
del11_m - Enabling delay in minutes for step 1 of program 149216U161min
del11_h - Enabling delay in hours for step 1 of program 149217U161hours
del21_m - Enabling delay in minutes for step 2 of program 149218U161min
del21_h - Enabling delay in hours for step 2 of program 149219U161hours
del31_m - Enabling delay in minutes for step 3 of program 149220U161min
del31_h - Enabling delay in hours for step 3 of program 149221U161hours
del41_m - Enabling delay in minutes for step 4 of program 149222U161min
del41_h - Enabling delay in hours for step 4 of program 149223U161hours
del51_m - Enabling delay in minutes for step 5 of program 149224U161min
del51_h - Enabling delay in hours for step 5 of program 149225U161hours
del61_m - Enabling delay in minutes for step 6 of program 149226U161min
del61_h - Enabling delay in hours for step 6 of program 149227U161hours
del71_m - Enabling delay in minutes for step 7 of program 149228U161min
del71_h - Enabling delay in hours for step 7 of program 149229U161hours
del02_m - Enabling delay in minutes for step 0 of program 249230U161min
del02_h - Enabling delay in hours for step 0 of program 249231U161hours
del12_m - Enabling delay in minutes for step 1 of program 249232U161min
del12_h - Enabling delay in hours for step 1 of program 249233U161hours
del22_m - Enabling delay in minutes for step 2 of program 249234U161min
del22_h - Enabling delay in hours for step 2 of program 249235U161hours
del32_m - Enabling delay in minutes for step 3 of program 249236U161min
del32_h - Enabling delay in hours for step 3 of program 249237U161hours
del42_m - Enabling delay in minutes for step 4 of program 249238U161min
del42_h - Enabling delay in hours for step 4 of program 249239U161hours
del52_m - Enabling delay in minutes for step 5 of program 249240U161min
del52_h - Enabling delay in hours for step 5 of program 249241U161hours
del62_m - Enabling delay in minutes for step 6 of program 249242U161min
del62_h - Enabling delay in hours for step 6 of program 249243U161hours
del72_m - Enabling delay in minutes for step 7 of program 249244U161min
del72_h - Enabling delay in hours for step 7 of program 249245U161hours
dur01_m - Duration in minutes for step 0 of program 149246U161min
dur01_h - Duration in hours for step 0 of program 149247U161hours
dur11_m - Duration in minutes for step 1 of program 149248U161min
dur11_h - Duration in hours for step 1 of program 149249U161hours
dur21_m - Duration in minutes for step 2 of program 149250U161min
dur21_h - Duration in hours for step 2 of program 149251U161hours
dur31_m - Duration in minutes for step 3 of program 149252U161min
dur31_h - Duration in hours for step 3 of program 149253U161hours
dur41_m - Duration in minutes for step 4 of program 149254U161min
dur41_h - Duration in hours for step 4 of program 149255U161hours
dur51_m - Duration in minutes for step 5 of program 149256U161min
dur51_h - Duration in hours for step 5 of program 149257U161hours
dur61_m - Duration in minutes for step 6 of program 149258U161min
dur61_h - Duration in hours for step 6 of program 149259U161hours
dur71_m - Duration in minutes for step 7 of program 149260U161min
dur71_h - Duration in hours for step 7 of program 149261U161hours
dur02_m - Duration in minutes for step 0 of program 249262U161min
dur02_h - Duration in hours for step 0 of program 249263U161hours
dur12_m - Duration in minutes for step 1 of program 249264U161min
dur12_h - Duration in hours for step 1 of program 249265U161hours
dur22_m - Duration in minutes for step 2 of program 249266U161min
dur22_h - Duration in hours for step 2 of program 249267U161hours
dur32_m - Duration in minutes for step 3 of program 249268U161min
dur32_h - Duration in hours for step 3 of program 249269U161hours
dur42_m - Duration in minutes for step 4 of program 249270U161min
dur42_h - Duration in hours for step 4 of program 249271U161hours
dur52_m - Duration in minutes for step 5 of program 249272U161min
dur52_h - Duration in hours for step 5 of program 249273U161hours
dur62_m - Duration in minutes for step 6 of program 249274U161min
dur62_h - Duration in hours for step 6 of program 249275U161hours
dur72_m - Duration in minutes for step 7 of program 249276U161min
dur72_h - Duration in hours for step 7 of program 249277U161hours
H21 - Configurability of digital output 149314U161
dn1 - Start-up delay of regulator 149316U161secs
do1 - Shutdown delay of regulator 149317U161min
di1 - Delay between two consecutive starts of regulator 149318U161min
dE1 - Start-up delay after the shutdown of regulator 149319U161secs
On1 - ON time of regulator 1 due faulty probe49320U161min
OF1 - OFF time of regulator 1 due faulty probe49321U161min
dn2 - Start-up delay of regulator 249323U161secs
do2 - Shutdown delay of regulator 249324U161min
di2 - Delay between two consecutive starts of regulator 249325U161min
dE2 - Start-up delay after the shutdown of regulator 249326U161secs
On2 - ON time of regulator 2 due faulty probe49327U161min
OF2 - OFF time of regulator 2 due faulty probe49328U161min
dSi - Value of soft start regulator step49329U160.1°C/°F
Std - Duration of soft start regulator step49330U161hh/min/secs
unt - Unit of measurement for step duration49331U161
SEn - Selects the regulator on which the soft start function must be enabled49332U161
Con - ON time for cyclic regulator output49333U161min
Cof - OFF time for cyclic regulator output49334U161min
Att - Mode of parameter HA1-HA2 and LA-LA249335U161
PAO - Temperature alarms disabling time from Power On49336U161hours
SAO - Timeout for 'set point not reached' alarm49337U161hours
tAO - Temperature alarms delay time49338U161min
AOP - Polarity of alarm output49339U161
PtS - Protocol selection49341U161
FAA - Family address49342U161
dEA - Device address49343U161
PtY - Modbus parity bit49344U161
StP - Modbus stop bit49345U161
LOC - Enable keyboard lock49346U161
ndt - Display with decimal point49347U161
Cai - Calibration enabling49348U161
dro - °C/°F selection49349U161
H00 - Type of probe selection49350U161
H02 - Keyboard functions enabling time49351U161secs
H01 - Configure type of regulators49352U161
H06 - Key or aux./light digital input ON with unit OFF49353U161
H08 - Standby operating mode49354U161
H10 - Delay output enabling from Power On49355U161min
H11 - ID configuration49356U161
H13 - Polarity and priority of digital inputs49357U161
H14 - Enabling delay of digital inputs49358U161min
H22 - Configurability of digital output 249359U161
H31 - UP button configurability49361U161
H32 - DOWN button configurability49362U161
run - Select PID automatic or manual mode49364U161
Adt - Enable duty cycle parameters adaptation49365U161
tun - Select auto-tuning for hot/cold adjustment49366U161
AtO - Auto-tuning timeout49368U161hours
PrE - Enable pre-tuning49370U161
ASA - Save parameters automatically after auto-tuning49371U161
start01 - Duration of step 0 counted from start or set point reached by program 149373U161
start11 - Duration of step 1 counted from start or set point reached by program 149374U161
start21 - Duration of step 2 counted from start or set point reached by program 149375U161
start31 - Duration of step 3 counted from start or set point reached by program 149376U161
start41 - Duration of step 4 counted from start or set point reached by program 149377U161
start51 - Duration of step 5 counted from start or set point reached by program 149378U161
start61 - Duration of step 6 counted from start or set point reached by program 149379U161
start71 - Duration of step 7 counted from start or set point reached by program 149380U161
start02 - Duration of step 0 counted from start or set point reached by program 249381U161
start12 - Duration of step 1 counted from start or set point reached by program 249382U161
start22 - Duration of step 2 counted from start or set point reached by program 249383U161
start32 - Duration of step 3 counted from start or set point reached by program 249384U161
start42 - Duration of step 4 counted from start or set point reached by program 249385U161
start52 - Duration of step 5 counted from start or set point reached by program 249386U161
start62 - Duration of step 6 counted from start or set point reached by program 249387U161
start72 - Duration of step 7 counted from start or set point reached by program 249388U161
reg01 - Regulator active for step 0 of program 149389U161
reg11 - Regulator active for step 1 of program 149390U161
reg21 - Regulator active for step 2 of program 149391U161
reg31 - Regulator active for step 3 of program 149392U161
reg41 - Regulator active for step 4 of program 149393U161
reg51 - Regulator active for step 5 of program 149394U161
reg61 - Regulator active for step 6 of program 149395U161
reg71 - Regulator active for step 7 of program 149396U161
reg02 - Regulator active for step 0 of program 249397U161
reg12 - Regulator active for step 1 of program 249398U161
reg22 - Regulator active for step 2 of program 249399U161
reg32 - Regulator active for step 3 of program 249400U161
reg42 - Regulator active for step 4 of program 249401U161
reg52 - Regulator active for step 5 of program 249402U161
reg62 - Regulator active for step 6 of program 249403U161
reg72 - Regulator active for step 7 of program 249404U161
soft01 - Enable soft start for step 0 of program 149405U161
soft11 - Enable soft start for step 1 of program 149406U161
soft21 - Enable soft start for step 2 of program 149407U161
soft31 - Enable soft start for step 3 of program 149408U161
soft41 - Enable soft start for step 4 of program 149409U161
soft51 - Enable soft start for step 5 of program 149410U161
soft61 - Enable soft start for step 6 of program 149411U161
soft71 - Enable soft start for step 7 of program 149412U161
soft02 - Enable soft start for step 0 of program 249413U161
soft12 - Enable soft start for step 1 of program 249414U161
soft22 - Enable soft start for step 2 of program 249415U161
soft32 - Enable soft start for step 3 of program 249416U161
soft42 - Enable soft start for step 4 of program 249417U161
soft52 - Enable soft start for step 5 of program 249418U161
soft62 - Enable soft start for step 6 of program 249419U161
soft72 - Enable soft start for step 7 of program 249420U161
rele01 - Enable auxiliary output for step 0 of program 149421U161
rele11 - Enable auxiliary output for step 1 of program 149422U161
rele21 - Enable auxiliary output for step 2 of program 149423U161
rele31 - Enable auxiliary output for step 3 of program 149424U161
rele41 - Enable auxiliary output for step 4 of program 149425U161
rele51 - Enable auxiliary output for step 5 of program 149426U161
rele61 - Enable auxiliary output for step 6 of program 149427U161
rele71 - Enable auxiliary output for step 7 of program 149428U161
rele02 - Enable auxiliary output for step 0 of program 249429U161
rele12 - Enable auxiliary output for step 1 of program 249430U161
rele22 - Enable auxiliary output for step 2 of program 249431U161
rele32 - Enable auxiliary output for step 3 of program 249432U161
rele42 - Enable auxiliary output for step 4 of program 249433U161
rele52 - Enable auxiliary output for step 5 of program 249434U161
rele62 - Enable auxiliary output for step 6 of program 249435U161
rele72 - Enable auxiliary output for step 7 of program 249436U161
fine01 - End step 0 of program 149437U161
fine11 - End step 1 of program 149438U161
fine21 - End step 2 of program 149439U161
fine31 - End step 3 of program 149440U161
fine41 - End step 4 of program 149441U161
fine51 - End step 5 of program 149442U161
fine61 - End step 6 of program 149443U161
fine71 - End step 7 of program 149444U161
fine02 - End step 0 of program 249445U161
fine12 - End step 1 of program 249446U161
fine22 - End step 2 of program 249447U161
fine32 - End step 3 of program 249448U161
fine42 - End step 4 of program 249449U161
fine52 - End step 5 of program 249450U161
fine62 - End step 6 of program 249451U161
fine72 - End step 7 of program 249452U161
step01 - Number of partial cycle to run for step 0 of program 149453U161
step11 - Number of partial cycle to run for step 1 of program 149454U161
step21 - Number of partial cycle to run for step 2 of program 149455U161
step31 - Number of partial cycle to run for step 3 of program 149456U161
step41 - Number of partial cycle to run for step 4 of program 149457U161
step51 - Number of partial cycle to run for step 5 of program 149458U161
step61 - Number of partial cycle to run for step 6 of program 149459U161
step71 - Number of partial cycle to run for step 7 of program 149460U161
step02 - Number of partial cycle to run for step 0 of program 249461U161
step12 - Number of partial cycle to run for step 1 of program 249462U161
step22 - Number of partial cycle to run for step 2 of program 249463U161
step32 - Number of partial cycle to run for step 3 of program 249464U161
step42 - Number of partial cycle to run for step 4 of program 249465U161
step52 - Number of partial cycle to run for step 5 of program 249466U161
step62 - Number of partial cycle to run for step 6 of program 249467U161
step72 - Number of partial cycle to run for step 7 of program 249468U161
AOL - Analog output configuration49469U161
AOF - Operation mode of analogue output49470U161
AOS - Operation mode of analogue output with probe error49471U161
cH - Derivative PID weighting set point H49548U161
cC - Derivative PID weighting set point C49551U161
FunH - Select regulation algorithm H49552U161
FunC - Select regulation algorithm C49554U161

link settings as documented (unverified): RTU; default 9600 8E1; unit ID 1; FC 03,16,43; If parameters PtS, PtY and Stp are changed, the controller must be turned off and then on again after they are changed to operate correctly.

bench facts as documented (unverified)
terminalsRS485 cable shielded and twisted (e.g.: Belden cable model 8762)
connector5-path connector TTL cable (30cm)
wiring notesBus Adapter BA150
max registers/read60
broadcastsupported
protocol notesParameters belonging to two different non-consecutive blocks cannot be read using a single command.
identification notesField code 0: Manufacturer ID ('Invensys'), Field code 1: Instrument model ID ('003E_000A'), Field code 2: Instrument version ID ('00F8_0011')
FC 43 device IDsupported
doc revision2010/04/0
field reports — community-sourced, unverified (checked 2026-06-11)
  • confirmed: Baud rate of 9600 and default baud of 9600 — confirmed by Eliwell EW 4800 Modbus Manual [1.1.1]
  • confirmed: Default unit ID of 1 — confirmed by default parameters FAA=0 and dEA=1 (FAA * 16 + dEA = 1) in Eliwell EW 4800 Modbus Manual
  • confirmed: Modbus RTU framing and function codes 3, 16, 43 — confirmed by Eliwell EW 4800 Modbus Manual
  • confirmed: Power cycle requirement after changing PtS, PtY, and Stp — confirmed by Eliwell EW 4800 Modbus Manual
  • confirmed: Default parity 'E' and stop bits 1 — confirmed by Eliwell EW 4800 Modbus Manual
  • confirmed: Document revision '2010/04/0' — confirmed by Eliwell EW 4800 Modbus Manual footer
  • confirmed: Device identification fields (Manufacturer ID 'Invensys', Model ID '003E_000A', Version ID '00F8_0011') — confirmed by Eliwell EW 4800 Modbus Manual
  • confirmed: Physical connection via 5-path connector TTL cable (30cm), Bus Adapter BA150, and Belden 8762 RS485 cable — confirmed by Eliwell EW 4800 Modbus Manual

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