Remberg ISO-plus-CAN User manual

ISO-plus-CAN
ISO-plus-RS4
User manual

User manual -- 3
Table of contents
1 Safety standards....................................................................................................................................5
2 Model identication.............................................................................................................................5
3 Technical data........................................................................................................................................5
3.1 Main features................................................................................................................................5
3.2 Hardware Features......................................................................................................................6
3.3 Software features ........................................................................................................................6
4 Dimensions and Installation..............................................................................................................7
5 Electrical wirings ...................................................................................................................................7
5.1 Wiring diagram............................................................................................................................8
6 Leds and key function ........................................................................................................................10
6.1 Meaning of status lights (LED) ...............................................................................................10
6.2 Key .................................................................................................................................................11
6.3 Dip switch ....................................................................................................................................11
7 Controller functions............................................................................................................................11
7.1 Loading default values ............................................................................................................11
7.2 Controller Start / Stop and setpoint modication............................................................11
7.3 Automatic tuning ......................................................................................................................12
7.4 Manual tuning ...........................................................................................................................12
7.5 AutoTuning Launch “Once” ....................................................................................................12
7.6 Synchronized tuning.................................................................................................................12
7.7 Automatic/Manual regulation for % output control.......................................................13
7.8 Heater Break Alarm on CT (Current Transformer).............................................................13
7.9 Dual Action Heating-Cooling ................................................................................................14
7.10 Soft-Start function.....................................................................................................................16
7.11 Retransmission function on analogue output ..................................................................16
7.12 LATCH ON Function...................................................................................................................16
7.13 Expansion function...................................................................................................................17
8 Serial communication .......................................................................................................................17
9 Table of conguration parameters ................................................................................................23
9.1 GROUP A - ANALOGUE INPUT.................................................................................................23
9.2 Group B - OUTPUT AND REGULATION..................................................................................25
9.3 GROUP C - AUTOTUNING AND P.I.D......................................................................................27
9.4 GROUP D - ALARM 1..................................................................................................................30
9.5 GROUP E - ALARM 2...................................................................................................................31
9.6 GROUP F - SOFT-START.............................................................................................................33
9.7 GROUP G - CURRENT TRANSFORMER...................................................................................34
9.8 GROUP H - RETRANSMISSION.................................................................................................35
9.9 GROUP I - SERIALE......................................................................................................................36
9.10 GROUP J - EXPANSION..............................................................................................................37
10 Alarm Intervention Modes................................................................................................................38
11 Table of Anomaly Signals..................................................................................................................41

User manual - - 5
Introduction
Thanks for choosing is controller.
The ISO-RS4 series integrates in a single device the main elements of the control
loop: reading of temperature sensor, control output by SSR module, reading
and control of the current on the load by means of integrated current CT. Serial
communication RS485 and ModbusRTU or CANopen protocol allow the connection
to PC/HMI Panels for supervisory functions/remote control.
This device is provided with alarms functions, management of double action
installation and possibility to be used as expansion controlled by PLC.
1 Safety standards
Read carefully the safety guidelines and programming instructions contained in this
manual before using/connecting the device.
Disconnect power supply before proceeding to hardware settings or electrical
wirings.
Only qualied personnel should be allowed to use the device and/or service it and
in accordance to technical data and environmental conditions listed in this manual.
Do not dispose electric tools together with household waste material. In observance
European Directive 2002/96/EC on waste electrical and electronic equipment and
its implementation in accordance with national law, electric tools that have reached
the end of their life must be collected separately and returned to an environmental-
ly compatible recycling facility.
2 Model identication
ISO-plus-RS4 Power supply 24Vdc ±15% + 1 analogue input + 2 logic
output 24Vdc/50mA + 1 output 0/4...20mA + RS485 +C.T.
ISO-plus-CAN
Power supply 24Vdc ±15% + 1 analogue input + 2 logic
output 24Vdc/50mA + 1 output 0/4...20mA + CANopen
+C.T.
3 Technical data
3.1 Main features
Operating temperature 0-45°C, humidity 35..95uR%
Box DIN43880, 18 x 90 x 64 mm
Material Box: PC UL94V0 self-extinguishing; front panel: PC
UL94V0 self-extinguishing
Protection IP20 (box and terminal blocks)
Peso Approx. 30 g

6 - - User manual
3.2 Hardware Features
Power supply 24 VDC ±15% Consumption: 3 VA
Analogue input
1: AN1 Congurable via
software.
Input: Thermocouple type
K, S, R, J, T, E, N, B. Automatic
compensation of cold junction
from 0..50°C.
Thermoresistance: PT100,
PT500, PT1000, Ni100, PTC1K,
NTC10K (β 3435K).
Input V/I: 0-10 V, 0-20 or 4-20
mA, 0-60 mV.
Pot. input: Congurable
1..150k,
+ 1: C.T. trafo amperimetrico: 50 mAAC 50/60 Hz
Tolerance (25 °C)
+/-0.3% ±1 digit (su F.s.) for
thermocouple, thermoresi-
stance and V / mA.
Cold junction accuracy 0.1
°C/°C
Impedence:
0-10 V: Ri>110 k
0-20 mA: Ri<50 
4-20 mA: Ri<50 
0-60 mV: Ri>500 k
Logic output
2x SSR.
Congurable as command or
alarm output
+24VDC ±15%/ 50mA
Analogue output
1x 0/4..20 mA.
Congurable as command
output, alarm output or
retransmission
0..20 mA:
42500 points, ±0.3% on F.S.
4..20 mA
34000 points, ±0.3% on F.S.
3.3 Software features
Regulation
algorithms
ON-OFF with hysteresis.
P, PI, PID, PD proportional time.
Proportional band 0..999°C or °F
Integral time 0,0..999,9 s (0 excludes integral function)
Derivative time 0,0..999,9 s (0 excludes derivative function)
Controller
functions Manual or automatic tuning, congurable alarm, Start/Stop.
Serial output RS-485 Mod bus. galvanically insulated
galvanically insulated
galvanically insulated

4 Dimensions and Installation
RUN
OUT1
OUT2
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
RUN
OUT1
OUT2
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
ON ON
8
7
6
5
4
3
2
1
4
3
2
1
ON ON
8
7
6
5
4
3
2
1
4
3
2
1
64 mm
Attacco a guida DIN EN50022
Din rail mounting guide EN50022
18 mm
90 mm
64 mm
.
Din rail mounting guide EN50022
18 mm
90 mm
DRR460-12A-T128 DRR460-12A-CAN
5 Electrical wirings
This controller has been designed and manufactured in conformity to Low Voltage
Directive 2006/95/EC , 2014/35/EU (LVD) and EMC Directive 2004/108/EC, 2014/30/
EU (EMC). For installation in industrial environments please observe following safety
guidelines:
• Separate control line from power wires.
• Avoid proximity of remote control switches, electromagnetic contactors,
powerful engines and use specic lters.
• Avoid proximity of power groups, especially those with phase control.
• It is strongly recommended to install adequate mains lter on power supply of
the machine where the controller is installed, particularly if supplied 230Vac. The
controller is designed and conceived to be incorporated into other machines,
therefore CE marking on the controller does not exempt the manufacturer of
machines from safety and conformity requirements applying to the machine
itself.

8 - - User manual
5.1 Wiring diagram
ISO-plus-RS4
5.1.a Power Supply
1
+
–
24 VDC
2
Power supply 24 VDC ±15% – 3 VA
5.1.b Analogue Input
+
–
AI TC
Shield / Schermo
13
14
For thermocouples K, S, R, J, T, E, N, B.
• Comply with polarity
• For possible extensions, use compensated cable
and terminals suitable for the thermocouples
used(compensated)
• When shielded cable is used, it should be grounded at
one side only
AI
Rosso
Red
Bianco
White
Rosso
Red
Shield / Schermo
PT/NI100
13
14
15
For thermoresistances PT100, Ni100.
• For the three-wire connection use wires with the same
section
• For the two-wire connection short-circuit terminals 13
and 15
• When shielded cable is used, it should be grounded at
one side only
AI
Shield / Schermo
PTC/NTC
14
15
For thermoresistances NTC, PTC, PT500, PT1000 and
linear potentiometers
When shielded cable is used, it should be grounded at one
side only to avoid ground loop currents
+
–
AI V
mA
Shield / Schermo
13
14
For linear signals in Volt and mA
Comply with polarity
When shielded cable is used, it should be grounded at one
side only to avoid ground loop currents

User manual - 9
5.1.c Examples of connection for Volt and mA inputs
PRESSURETRANSMITTER/
SENSOREDIPRESSIONE
B
C
A
4...20mA
2
14
13
1
P :0...100mbar Pmax :3bar T :0..70°C
OUT : 4...20mA IN :9...33V DC
For linear signals 0/4..20 mA with three-wires
sensors.
Comply with polarity:
A= Sensor output
B= Sensor ground
C= Sensor supply (24VDC)
Short circuit pins 2 and 14.
Externalsupply/
Alimentazioneesterna
P :0...100mbar Pmax :3bar T :0..70°C
OUT : 4...20mA IN :9...33V DC
PRESSURETRANSMITTER/
SENSOREDIPRESSIONE
C
B
4...20mA
13
14
For linear signals 0/4..20 mA with external power
supply for sensor.
Comply with polarity:
A= Sensor output
B= Sensor ground
P :0...100mbar Pmax :3bar T :0..70°C
OUT : 4...20mA IN :9...33V DC
C
A
PRESSURETRANSMITTER/
SENSOREDIPRESSIONE
4...20mA
2
14
13
1
For linear signals 0/4..20 mA with two-wires sensors.
Comply with polarity:
A= Sensor output
C= Sensor supply (24VDC)
Short circuit pins 2 and 14.
5.1.d Serial input
(A) –
TERM
120Ω
(B) +
RS485
Shield / Schermo
10
9
11
Communication RS485 Modbus RTU Slave galvanically
insulated from the sensor.
Short circuit pins 9 and 10 to enter on the bus a 120
termination resistance.
5.1.e CT input
12
CT
16
Input for CT 50mA.
Sampling time 100 µs.
Current measure true RMS for Heater Break Alarm and
overcurrent alarm functions.

10 - User manual
5.1.f Digital outputs
5
+
–
Q1
24VDC / 50mA
6
7
+
–
Q2
24VDC / 50mA
8
Digital output 24VDC ±15%/ 50mA
5.1.g Analogue output
3
+
–
AO1
0/4..20mA
4
inear output in mA (galvanically insulated from the sensor)
congurable as command (par. 16 c.out ) or retransmission
of process-setpoint (par. 100 r e t r.)
6 Leds and key function
6.1 Meaning of status lights (LED)
RUN Indicates presence of serial communication
OUT1
Normally it indicates the status of output OUT1.
• During test (pressing key), if the command output is OUT1, blinks
with frequency 50ms.
• At the end of current acquisition by the CT, blinks with frequency
0.5s if the operation has been done successfully.
• In case of error, it blinks in alternation with the led OUT 2 (ex.
broken sensor).
OUT2
Normally indicates the status of output OUT2.
• During test (pressing key), if the command output is OUT2, blinks
with frequency 50ms.
• At the end of current acquisition by the CT, blinks with frequency
0.5s if the operation has been done successfully
• In case of error, it blinks in alternation with the led OUT 1 (ex.
broken sensor).

User manual - 11
6.2 Key
• If pressed it enables the command output: press for more
than 3 seconds to manage the threshold current reading for
the Heater Break Alarm control.
• If pressed during the modbus address assignment function, it
stores the value assigned by the master (only if the dip1 is all
in OFF).
6.3 Dip switch
1
ON
2
3
4
5
6
7
8
DIP 1 – Slave address
• If contacts 1..8 are OFF, modbus slave address is selected on
parameter 111 sL. a d .
• Determines modbus slave address, in binary code as indicated
below: (contact 1 = LSB) ex. address 1= 1(0N) 2,3,4,5,6,7,8(0FF)
00000001=1; 00000010=2; 00000011=3; 00000100=4; 00000101=5;
00000110 =6; 00000111=7; 01111101=125; 01111110=126;
01111111=127; 10000000=128; 10000001=129; 10000010=130;
11111011=251; 11111100=252; 11111101=253; 11111110=254.
1
ON
2
3
4
DIP 2 - Baud rate and loading default values
• If contacts 1..3 are OFF, modbus baud rate is selected on parameter
112 bd . rt.
• If contact 4 is ON, parameters and all eeprom datas are loaded with
default values (default = 19.200baud , address 247, 8n1).
• Determines modbus baud rate, using following values:
001=4800; 010=9600; 011=19200; 100=28800; 101=38400;
110 =57600; 111=115200. (contact 1 = LSB). ex. baud 4800 = 1(ON) 2, 3(OFF)
7
7 Controller functions
7.1 Loading default values
This procedure allows to restore default settings as pre-selected at the factory.
There are two reset modes:
• Close contact 4 of the dip switch 2 and reopen it at restart.
• Write 9999 on word modbus 500.
After the restore, device restarts.
7.2 Controller Start / Stop and setpoint modication
User can decide if at power-on ISO-plus starts regulation or not, setting parameter
17 init.S. (word 2017). Can modify the controller state writing 1 (start) or 0 (stop) on
word 1204. It is possibile also to modify command setpoint writing on word 1201,
and alarm setpoints on words 1202 and 1203.

12 - User manual
7.3 Automatic tuning
Select 1 on parameter 31 (Tu n e word 2031).
Automatic tuning is always active and analyses constantly the dierence setpoint-
process. If this dierence is greater than the value selected on parameter 47 m.G. tu .
(Max Gap Tune - word 2047), the ISO-plus decides autonomously when to modify
PID parameters.
7.4 Manual tuning
Select 2 on parameter 31 (Tu n e word 2031).
The manual procedure allows the user a greater exibility on deciding when to
update PID algorithm parameters.
This procedure is activated writing 1 on the word modbus 1205. The reference
threshold to calculate the new PID parameters is given by the result of the following
operation:
Tune threshold = Setpoint (word 1201) – Par. 32 s.d.tu. (word 2032)
Ex.: if setpoint is 100.0°C and Par. 32 s.d.tu. is 20.0°C, the threshold to calculate PID
parameters is (100.0–20.0) = 80.0°C.
N.B.: for greater accuracy in the calculation of PID parameters it is recommended to
launch the manual tuning when the process is far from setpoint.
7.5 AutoTuning Launch “Once”
Set 3 on parameter 31 tune (word 2031). Autotuning procedure is executed only
once at next ISO-plus restart. If the procedure doesn’t work, will be executed at next
restart.
7.6 Synchronized tuning
Select 4 on parameter 31 (Tu n e word 2031).
This procedure has been conceived to calculate correct PID values on multi-zone
systems, where each temperature is inuenced by the adjacent zones.
Writing on word 1205, the device works as follows:
Word 1004 value Action
0Tune o.
1Command output OFF
2Command output ON
3Tune active
4Tune completed: command output OFF (read only)
5Tune not available: softstart function enabled (only reading)
The operation of this Tuning mode is the following: the master switches-o or
turns-on all zones (value 1 or 2 on word 1205) for a time long enough to create
inertia on the system.
At this point the autotuning is launched (value 3 on word 1205). The controller
calculates the new PID values. When the procedure ends, it switches-o the control
output and sets the value 4 on word 1205. The master, which should always read the

User manual - 13
word 1205, checks the various zones and when all of them have reached the value 4
it will bring to 0 the value of word 1205.
The various devices will regulate the temperature basing on the new values.
N.B. The master must read the Word 1205 at least every 10 seconds or the controller
will automatically exit the autotuning procedure.
7.7 Automatic/Manual regulation for % output control
This function allows to select automatic functioning or manual command of the
output percentage. With parameter 25 (au.ma. word 2025), you can select two
methods.
1. The rst selection (value 1 of word 2025) allows to modify, through the word
1206, the functioning mode: after writing 1 it is possible to change the output
percentage on word 1206 (range 0-10000).
To return to automatic mode, write 0 on word 1206.
2. The second selection (value 2 of word 2025) enables the same functioning, but
with two important variants:
• If there is a temporary lack of voltage or after switch-o, the manual
functioning will be maintained as well as the previously set output percentage
value.
• If the sensor breaks during automatic functioning, the controller moves
to manual mode while maintaining the output percentage command unchanged
as generated by the P.I.D. immediately before breakage.
7.8 Heater Break Alarm on CT (Current Transformer)
This function allows to measure load current to manage an alarm during a malfun-
ctioning with power in short circuit, always open or partial break of the charge.
To enable this function set 1 (50 Hz) or 2 (60 Hz) on paramater 90 c. t. (word 2090). Set
the value of the connected transfomer on parameter 91 c. t. v . (word 2091).
• Select on par. 92 H,b.a.t. the Heater Break Alarm intervention threshold in
Ampere. Otherwise it is possible to select this value in automatic mode pressing
for more than 3 seconds.
• Select on par. 94 H,b.a.d. the delay time in seconds for the Heater Break Alarm
intervention.
• It is possible to associate the alarm to the output OUT2, selecting 10 on par. 56 a L.
1. or par. 68 a L. 2.
It is possible also to enable an overcurrent control, setting on parameter 93 ocu.t.
the intervention threshold in Ampere.

7.9 Dual Action Heating-Cooling
This module is suitable also for systems requiring a combined heating-cooling action.
The command output has to be congured as PID for Heating (par. 33 p. b. greater
than 0), while the alarm 1 and 2 has to be congured as Cooling (value 9 on par.
56 AL. 1 o par. 68 a L. 2). The command output must be connected to the actuator
responsible for heating, while the alarm will control cooling action.
Parameters to be congured for the heating PID are:
p. b. (word 2033): Heating proportional band
t.i . (word 2034): Integral time of heating and cooling
t.d. (word 2035): Derivative time of heating and cooling
t. c. (word 2040): Heating time cycle
Parameters to be congured for the cooling PID are:
AL. 1 (word 2056) or AL. 2 (word 2068) = co oL (value 9) Alarm selection (Cooling)
p. b .M. (word 2042): Proportional band multiplier
ou.d.b.
(word 2043): Overlapping / Dead band
co.c.t.
(word 2044): Cooling time cycle
Par. p. b .M. (that ranges from 1.00 to 5.00) determines the proportional band of
cooling action basing on the formula:
Proportional band for cooling action = p. b . * p. b.M.
This gives a proportional band for cooling which will be the same as heating band if
p. b .M. = 1.00, or 5 times greater if p. b .M. = 5.00.
Integral and derivative time are the same for both actions.
The par. ou.d.b. determines the percentage overlapping between the two actions.
For systems in which the heating output and cooling output must never be simul-
taneously active a dead band (ou.d.b. ≤ 0) must be congured, vice versa you can
congure an overlapping (ou.d.b. > 0).
The following gure shows an example of dual action P.I.D. (heating-cooling) with
t.i . = 0 and t. d. = 0.
ACTIVE
ACTIVE
SPV
PV
 x  = COOL
 x  = COOL
 x  = COOL
 < 0
 = 0
 > 0
 (HEAT)
 (HEAT)
 (HEAT)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
SPV
PV
ACTIVE
ACTIVE
SPV
PV
ACTIVE
ACTIVE

User manual - 15
ACTIVE
ACTIVE
SPV
PV
 x  = COOL
 x  = COOL
 x  = COOL
 < 0
 = 0
 > 0
 (HEAT)
 (HEAT)
 (HEAT)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
SPV
PV
ACTIVE
ACTIVE
SPV
PV
ACTIVE
ACTIVE
ACTIVE
ACTIVE
SPV
PV
 x  = COOL
 x  = COOL
 x  = COOL
 < 0
 = 0
 > 0
 (HEAT)
 (HEAT)
 (HEAT)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
COMMAND OUTPUT (HEAT)
ALARM OUTPUT (COOL)
SPV
PV
ACTIVE
ACTIVE
SPV
PV
ACTIVE
ACTIVE
The parameter co.c.t. has the same meaning as the heating time cycle t. c.
Par. 41 c o o . F. (Cooling Fluid – word 2041) pre-selects the proportional band multiplier
p.b.m.
and the cooling PID cycle time co.c.t. basing on the type of cooling uid:
co o . f. Cooling fluid type p.b.m. co.c.t.
Ai r Air 1.00 10
oi L Oil 1.25 4
H2o Water 2.50 2
Once selected the parameter co o . f., parameters p.b.m., ou.d.b and co.c.t. can
however be modied.

16 - User manual
7.10 Soft-Start function
ISO-plus is provided with two types of softstart selectables on parameter 80 SS. tY.
(“Softstart Type” word 2080).
1 First selection (value 1 of word 2080) enables gradient softstart. At starting the
controller reaches setpoint basing on the rising gradient set on parameter 81
SS. G r. (“Softstart Gradient” word 2081) in Unit/hour (ex. °C/h). If parameter 84 SS . ti .
(“Softstart Time” word 2084) is dierent to 0, at starting when the time selected on
parameter 84 is elapsed, the controller stops to follow the gradient and reaches
setpoint with the maximum power.
2 Second selection (value 2 of word 2080) enables output percentual softstart. On
par 83 SS. tH. (“Softstart Threshold” word 2083) it is possible to set the threshold
under which starts the softstart. On parameter 82 SS.PE. (“Softstart Percentage”
word 2082) an output percentage is selectable (0 to 100), which controller keeps
until the process exceeds the threshold set on parameter 83 or until the time in
minutes set on parameter 84 S S . ti . (“Softstart Time” word 2084) expires.
7.11 Retransmission function on analogue output
If not used as command, the anaolgue output can be used to retransmit process/
setpoint/ current read by the C.T. input/ output percentage.
Select on parameter 100 rEt r. (“Retransmission” word 2100) the value to be
retransmitted. Select on parameter 101 rE. tY. (“Retransmission Type” word 2101) the
type of output. It is possible also to select on parameters 102 and 103 the input value
rescale limites.
7.12 LATCH ON Function
For use with input p o t .1 (potentiometer 6 K) and po t.2 (potentiometer 150 K) and
with linear input (0..10 V, 0..60 mV, 0/4..20 mA), it is possible to associate start value
of the scale (parameter 3 Lo .L.i . “Lower Linear Input“ word 2003) to the minimum
position of the sensor and value of the scale end (parameter 4 u P.L.i . “Upper
Linear Input“ word 2004) to the maximum position of the sensor (parameter 1 sul
parametro 9 Ltch ”Latch On” word 2009).
It is also possible to x the point in which the controller will display 0 (however
keeping the scale range between Lo .L.i . e u P.L.i .) using the “virtual zero” option by
setting 2 or 3 in parameter 9 Lt ch .
Setting 2 virtual zero can be modied in each moment while setting 1, Latch-On
function ends after 120 seconds.
Then refer to the following table for the calibration procedure:

User manual - 17
Press Display Do
11300 Write 1 to enable Latch on. Write 0
to end procedure
Place the sensor on minimum
operating value (corresponding
to Lo .L.i)
21301 Write 1 to x value on minimum
Place sensor on maximum
operating value (corresponding
to u P.L.i .)
31302 Write 1 to x value on maximum
To exit standard procedure write 0
on 1300 or wait 120 seconds.
With “virtual zero” put the sensor
on zero point.
41303 Write 1 to x zero virtual value.
Write 2 to reset zero virtual value.
To exit procedure write 0 on word
1300.
7.13 Expansion function
Selecting 1 on parameter 121 E.M o d . (“Expansion Module” word 2121) it works
as a expansion module. Controller functions (temperature control, alarms, softstart
etc..) are disabled and outputs management must be done by an external master
(Es. PLC, HMI panel...).
It is possible to congure output status at starting and in case of error, programming
parameters 122...131 (see par. 9). Into this mode, refer to modbus words 1500..1508
(see par. 8).
8 Serial communication
The module xx-T128 is equipped with RS485 and can receive/broadcast data via serial
communication using MODBUS RTU protocol. The device can only be congured
as a Slave. This function enables the control of multiple controllers connected to a
supervisory system/SCADA.
If contacts of dip-switch 1 are all open each controller responds to a Master query
only if the query contains the same address as parameter 111 sL. a d .(“Slave Address”
word 2111).
The addresses permitted range from 1 to 254 and there must not be controllers with
the same address on the same line.
Address 255 can be used by the Master to communicate with all the connected
equipment (broadcast mode), while with 0 all the devices receive the command, but
no response is expected.

18 - User manual
If Dip-Switch 2 contacts are opened, the baud rate is selected on parameter 112
bd . rt. (“Baud Rate” word 2112).
Module can introduce a delay (in milliseconds) of the response to the master
request. This delay must be set on parameter 114 se. d e. (“Serial Delay” word 2114).
Each parameter modication is saved by the controller in the EEPROM memory
(100000 writing cycles), while the setpoints are saved with a delay of 10 seconds
after the last modication.
NB: Changes made to words that are dierent from those reported in the following
table can lead to malfunction.
Modbus RTU protocol features
Baud-rate
Selectable on par. 112 bd . rt.
Value 0: 4800bit/s Value 4: 38400bit/s
Value 1: 9600bit/s Value 5: 57600bit/s
Value 2: 19200bit/s Value 6: 115200bit/s
Value 3: 28800bit/s
Format
Selectable on par. 113 s. p. p.
Value 0: 8N1 Value 3: 8N2
Value 1: 8E1 Value 4: 8E2
Value 2: 8O1 Value 5: 8O2
Supported
functions
WORD READING (max 20 word) (0x03, 0x04)
SINGLE WORD WRITING (0x06)
MULTIPLE WORDS WRITING (max 20 word) (0x10)
RO = Read Only R/W = Read/Write WO = Write Only
Modbus
address Descrizione Read
Write
Reset
value
0 Type of device RO 490
1Software version RO Flash
2Boot version RO Flash
3Slave address RO Eepr/dip
6 Baud rate RO Eepr/dip
50 Automatic addressing WO -
51 Installation code comparision for automatic
learning of slave address WO -
500 Loading default values (write 9999) RW 0
501 Restart (write 9999) RW 0
1000 Process (tenth of degree) RO -
1001 Command setpoint (tenth of degree) R/W EEPROM
1002 Alarm 1 setpoint (tenth of degree) R/W EEPROM
1003
Start/Stop
0=controller in STOP
1=controller in START
R/W 0

User manual - 19
Modbus
address Descrizione Read
Write
Reset
value
1004
With automatic tuning (word 2005 = 1):
0=autotuning function OFF
1=autotuning in progress
RO 0
With manual tuning (word 2005 = 2):
0=autotuning function OFF
1=autotuning ON
R/W 0
With synchronized tuning (word 2005 = 3):
0=autotuning function OFF
1=command out. OFF (forces the cooling)
2=command out. ON (forces the heating)
3=autotuning ON
4=autotuning completed
R/W 0
1005 Automatic/manual selection
0=automatic ; 1=manual R/W 0
1006 Output status (0=o, 1=on)
Bit 0 = OUT1 Bit 1 = OUT2 RO 0
1007
Led status (0 = OFF, 1 = ON)
Bit0 = Green led
Bit1 = Red led OUT1
Bit2 = Red led OUT2
RO 0
1008
Alarm status (0=absent, 1=present)
Bit0 = Allarme 1
Bit1 = Allarme 2
RO 0
1009
Error ags
Bit0 = Cold junction error
Bit1 = Process error (sensor)
Bit2 = Error in eeprom writing
Bit3 = Error in eeprom reading
Bit4 = Error missing calibration
Bit5 = Generic error
Bit6 = Hardware error
Bit7 = Error H.B.A. (SSR in short circuit)
Bit8 = Error H.B.A. (SSR/open charge)
Bit9 = Error H.B.A. (partial break of the charge)
Bit10= Overcurrent error
RO 0
1010 Cold junction temperature (degree with tenth) RO -
1011 Command output percentage (0-10000)
Heating output percentage in double loop R/W 0
1012 Cooling output percentage in double loop
(0-10000) RO 0
1013 Current CT (ampere with tenth) RO 0
1014 Current CT ON (ampere with tenth) RO 0

20 - User manual
Modbus
address Descrizione Read
Write
Reset
value
1015 Current CT OFF (ampere with tenth) RO 0
1016 Key status (0=rilasciato, 1=premuto) RO 0
1017 Dip 1 value RO 0
1100 Process (if temperature, no tenth) RO -
1101 Command setpoint (if temperature, no tenth) R/W EEPROM
1102 Alarm 1 setpoint (if temperature, no tenth) R/W EEPROM
1103 Command output percentage (0-1000)
Heating output percentage in double loop R/W 0
1104 Heating output percentage (0-100)
Heating output percentage in double loop R/W 0
1105 Cooling output percentage in double loop
(0-1000) RO 0
1106 Cooling output percentage in double loop (0-100) RO 0
1107
Output status (0=o, 1=on)
Bit 0 = OUT1
Bit 1 = OUT2
RO 0
1108 Command output percentage (0-10000)
Heating output percentage in doulbe loop R/W 0
1200 Process (if temperature, with tenth) RO ?
1201 Command setpoint (if temperature, with tenth) R/W EEPROM
1202 Alarm 1 setpoint (if temperature, with tenth) R/W EEPROM
1203 Alarm 2 setpoint (if temperature, with tenth) R/W EEPROM
1204
Start/Stop
0=controller in STOP
1=controller in START
R/W 0
1205
With automatic tuning (word 2005 = 1):
0=autotuning function OFF
1=autotuning in progress
RO 0
With manual tuning (word 2005 = 2):
0=autotuning function OFF
1=autotuning ON
R/W 0
With synchronized tuning (word 2005 = 3):
0=autotuning function OFF
1=command out. OFF (forces the cooling)
2=command out. ON (forces the heating)
3=autotuning ON
4=autotuning completed
R/W 0
1206 Automatic/manual selection
0=automatic ; 1=manual R/W 0
1207 Real value (gradient) command setpoint (if
temperature, with tenth) R -

User manual - 21
Modbus
address Descrizione Read
Write
Reset
value
1208
Alarm status (0=absent, 1=present)
Bit0 = Allarme 1
Bit1 = Allarme 2
RO 0
1209
Command output manual reset: write 0 to reset
command output.
In reading 0=can not be reset, 1=can be reset
R/W 0
1210
Alarms manual reset: write 0 to reset all alarms.
In reading 0=can not be reset, 1=can be reset
Bit0 = Allarme 1
Bit1 = Allarme 2
R/W 0
1211 Remote alarm 1 state (0=absent, 1=present) R/W 0
1212 Remote alarm 2 state (0=absent, 1=present) R/W 0
1213 AO value by serial (Par.100 = 6) R/W 0
1214
Error ags 1
Bit0 = Cold junction error
Bit1 = Process error (sensor)
Bit2 = Error in eeprom writing
Bit3 = Error in eeprom reading
Bit4 = Error missing calibration
Bit5 = Generic error
Bit6 = Hardware error
Bit7 = Error H.B.A. (SSR in short circuit)
Bit8 = Error H.B.A. (SSR/open charge)
Bit9 = Error H.B.A. (partial break of the charge)
Bit10= Overcurrent error
RO 0
1215
Error ags 2
Bit0 = Error eeprom calibrations
Bit1 = Error eeprom calibration constants
Bit2 = Error eeprom parameters
Bit3 = Error eeprom setpoint
Bit4 = Error eeprom service datas A
Bit5 = Error eeprom service datas B
Bit6 = Error eeprom service datas C
RO 0
1216 Command output percentage (0-10000)
Heating output percentage in double loop R/W 0
1217 Cooling output percentage in double loop
(0-10000) RO 0
1218 Command output percentage (0-1000)
Heating output percentage in double loop R/W 0
1219 Cooling output percentage in double loop
(0-1000) RO 0

22 - User manual
Modbus
address Descrizione Read
Write
Reset
value
1220 Command output percentage (0-100)
Heating output percentage in double loop R/W 0
1221 Cooling output percentage in double loop (0-100) RO 0
1222 Current CT (ampere with tenth) RO 0
1223 Current media CT (ampere with tenth) RO 0
1224 Current CT ON (ampere with tenth) RO 0
1225 Current CT OFF (ampere with tenth) RO 0
1226 Cold junction temperature (degree with tenth) RO -
1227
Output status (0=o, 1=on)
Bit 0 = OUT1
Bit 1 = OUT2
RO 0
1228
Led status (0 = OFF, 1 = ON)
Bit0 = Green led
Bit1 = Red led OUT1
Bit2 = Red led OUT2
RO 0
1229 Key status (0=rilasciato, 1=premuto) RO 0
1230 Dip 1 value RO 0
1231 Dip 2 value RO 0
1232 Process (if temperature, no tenth) RO -
1233 Command setpoint (if temperature, no tenth) R/W EEPROM
1234 Alarm 1 Setpoint (if temperature, no tenth) R/W EEPROM
1235 Alarm 2 Setpoint (if temperature, no tenth) R/W EEPROM
1300 Latch on setting R/W 0
1301 Latch on lower limit calibration R/W 0
1302 Latch on upper limit calibration R/W 0
1303 Latch on virtual zero calibration R/W 0
1500 Process (if temperature, with tenth) RO ?
1501 CT instantaneous current (ampere with tenth) RO 0
1502 Current CT ON (ampere with tenth) RO 0
1503 Current CT OFF (ampere with tenth) RO 0
1504 Key status (0=rilasciato, 1=premuto) RO 0
1505 Dip 1 value RO 0
1506 Dip 2 value RO 0
1507
Digital output status (0=o, 1=on)
Bit 0 = OUT1
Bit 1 = OUT2
R/W 0
1508 Analogue output value R/W 0
2001 Parameter 1 R/W EEPROM
2002 Parameter 2 R/W EEPROM
... Parameter ... R/W EEPROM
2143 Parameter 143 R/W EEPROM