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N120/N125 CONTROLLER

Communication Manual – V1.1x

1. SERIAL COMMUNICATION

1.1 COMMUNICATION INTERFACE

The optional serial interface RS485 allows to address up to 247 controllers in a network

communicating remotely with a host computer or master controller.

RS485 Interface

 Compatible line signals with RS485 standard

 3 wire connection from master to up to 31 slaves indicators in a multidrop bus. It is

possible address 247 nodes with multiple outputs converters.

 Maximum communication distance: 1000 meters

 The RS485 signals are:

D1 = D: Bidirectional data line.

D0 =

Bidirectional inverted data line.

C = GND: Optional connection which left communication better.

General Characteristics

 Optically isolated serial interface

 Programmable baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600 or

115200 bps.

 Data Bits: 8

 Parity: None, Even or Odd.

 Stop Bits: 1

Communication Protocol

The MOSBUS RTU slave is implemented, available in most SCADA softwares in the

market.

All configurable parameters can be accessed (for reading or writing) through the

Registers Table. Broadcast commands are supported as well (address 0).

The available Modbus commands are:

03 - Read Holding Register

05 - Force Single Coil (Force Digital Output state)

06 - Preset Single Register

16 - Preset Multiple Registers (Block write to multiple holding registers)

The registers are arranged in a table in such a way that several registers can be read in

the same request.

1.2 CONFIGURATION OF SERIAL COMMUNICATION PARAMETERS

Two parameters must be configured in the device for serial communication:

bavd: Baud rate. All devices with same baud rate.

addr: Device communication address. Each device must have an exclusive address.

prty: Paraty.

1.3 REGISTERS TABLE

Equivalent to the registers referenced as 4XXXX.

The holding registers are basically a list of the internal indicator parameters. All registers

above address 12 can be read or written. The registers up to this address in more are

read only. Please verify each case. Each table parameter is a 16 bits two complement

signed word.

Holding

Registers

Parameter

0000

Active SP

Read: Active control SP (main SP, from ramp and soak or

from remote SP).

Write: to main SP

Range: from spll to spkl.

0001

Read: Process Variable.

Write: Not allowed.

Range: Minimum value is the one configured in

spll and

the maximum value is the one configured in spkl.

Decimal point position depends on dppo value.

In case of temperature reading, the value read is always

multiplied by 10, independently of dppo value.

0002

Read: Output Power in automatic or manual mode.

Write: Not allowed. See address 28.

Range: 0 to 1000 (0.0 to 100.0%).

0003

Remote SP

type

Read/Write: Selected input type for remote SP.

Range: 0 to 3

0004

Display

value

Read: Current value shown on display.

Write: Current value shown on display.

Range: -1999 to 9999. The range depends on the

displayed parameter.

0005

Screen

number

Read: Current screen number.

Write: not allowed. Range: 0000h to 060Ch

Prompt number format: XXYYh, where:

XXmenu cycle number (check item 4 -

INSTALLATION/CONNECTIONS)

YYprompt number (index).

0006

Status Word

Read: Status bits. See table 2. Write: not allowed.

Read values: See table 2

0007

Software

Version

Read: The firmware version of controller.

Write: not allowed.

Read values: If V1.00, the read value will be 100.

0008

Read: controller identification number. Write: not allowed.

Values: 32 – N120 Controller

37 – N125

Other values: special instruments.

0009

Status Word 2

Read: Status bits. Write: not allowed.

Read values: See table 2.

0010

Status Word 3

Read: Status bits. Write: not allowed.

Read values: See table 2.

0011

Integral Rate (in repetitions/min)

Range: 0 to 9999 (0.00 to 99.99)

0012

Derivative Time (in seconds).

Range: 0 to 3000 (0.0 to 300.0)

0013

Proportional Band (in percentage)

Range: 0 to 5000 (0.0 to 500.0)

0014

tbas

Read/Write: Time base for the ramp and soak programs.

Range: 0 – 1 (seconds/minutes)

0015

Cycle Time (PWM, in seconds)

Range: 5 to 1000 (0.5 to 100.0)

0016

Freq

Read/Write: Mains frequency.

Range: 0 – 1 (60/50Hz)

0017

kyst

On/Off Control Hysteresis (in selected type engineering

unit).

Range: 0 to spkl -

spll

0018

fltr

Read/Write: PV digital filter gain.

Range: 0 – 20

0019

ovll

Output Low Limit (minimum output power)

Range: 0 to 1000 (0.0 to 100.0%).

0020

ovkl

Output High Limit (minimum output power)

Range: 0 to 1000 (0.0 to 100.0%).

0021

Reserved

Internal use.

0022

Reserved

Internal use.

1 2 3 4 5 6 ... 12 13

N120/N125 CONTROLLER 1

Resumo do Conteúdo

Página 1 - N120/N125 CONTROLLER

1 N120/N125 CONTROLLER Communication Manual – V1.1x 1. SERIAL COMMUNICATION 1.1 COMMUNICATION INTERFACE The optional serial interface RS485 allows

Página 2

10 0547 Psp7 Setpoint 7 of Program 5 (R&S) Range: same as in psp0. 0548 Psp8 Setpoint 8 of Program 5 (R&S) Range: same as in psp0. 0549 Psp9

Página 3

11 0595 Psp5 Setpoint 5 of Program 10 (R&S) Range: same as in psp0. 0596 Psp6 Setpoint 6 of Program 10 (R&S) Range: same as in psp0. 0597 Psp

Página 4

12 0643 Psp3 Setpoint 3 of Program 15 (R&S) Range: same as in psp0. 0644 Psp4 Setpoint 4 of Program 15 (R&S) Range: same as in psp0. 0645 Psp

Página 5

13 0691 Psp1 Setpoint 1 of Program 1 (R&S) Range: same as in psp0. 0692 Psp2 Setpoint 2 of Program 1 (R&S) Range: same as in psp0. 0693 Psp3

Página 6

2 0023 Serial number H Serial Number High (Upper display). Range: 0 to 9999. Read only. 0024 Serial number L Serial Number Low (Lower display). Ran

Página 7

3 0087 PASS Write: 0 0089 PRTY Serial communication parity. 0-> no parity; 1 - > even parity; 2 - >odd parity; 0090 Ctyp Customized input

Página 8

4 0143 Pe8 Segment 8 Event of R&S Program 5. Range: same as in pe1. 0144 Pe9 Segment 9 Event of R&S Program 5. Range: same as in pe1. 0145 Pe

Página 9

5 0193 Pe4 Segment 4 Event of R&S Program 11. Range: same as in pe1. 0194 Pe5 Segment 5 Event of R&S Program 11. Range: same as in pe1. 0195

Página 10

6 0243 Pe9 Segment 9 Event of R&S Program 16. Range: same as in pe1. 0244 Pe1 Segment 1 Event of R&S Program 17. Range: same as in pe1 of Pro

Página 11

7 0293 Ptol R&S Program 14 Tolerance Range: From 0 to (spkl - spll). 0294 Ptol R&S Program 15 Tolerance Range: From 0 to (spkl - spll). 0295

Página 12

8 0363 Pt8 Time 8 of Program 5. Range: 0 to 9999 minutes. 0364 Pt9 Time 9 of Program 5. Range: 0 to 9999 minutes. 0365 Pt1 Time 1 of Program 6. Range

Página 13

9 0457 Pt3 Time 3 of Program 16. Range: 0 to 9999 minutes. 0458 Pt4 Time 4 of Program 16. Range: 0 to 9999 minutes. 0459 Pt5 Time 5 of Program 16. Ra

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