Sterlco M2B+ Controller User Manual

Page 50

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Modbus Accessible Parameter Mapping. The customized controller allows access to (29)
controller parameters and settings, which can be accessed in Integer Mode or Floating point
mode. This is accomplished with (2) Point Address ranges, allowing data exchange in either
integer or floating point format, for all controller parameters and settings. All data conversion
such as rounding, integer float, Etc, is transparent and handled by the controllers, since
internal variables data type can be different for the MODBUS data exchange types.

The Advanced and M2B+ controllers are customized controller software supports the
following Modbus Parameters and Settings:

Figure 4: Modbus Parameters List

Parameter
/ Item
Index

R/W

Integer
Data
Region
Point
Address

Float
Data
Region
Point
Address

Min
Value

Max
Value

Description

0

R

0000

4000

0

0

Version ID (4369)

1

R

0001

4002

-34

343

Delivery Temp (ºC)

2

R

0002

4004

-34

343

Mold Temp (ºC)

3

R

0003

4006

-34

343

Return Temp (ºC)

4

R

0004

4008

0

999

Flow Value

5

R/W

0005

4010

0

1

System Standby Heat/cool

6

R/W

0006

4012

0

1

Temp Units

7

R/W

0007

4014

-34

343

Setpoint 1 (ºC)

8

R/W

0008

4016

-34

343

Setpoint 2 (ºC)

9

R/W

0009

4018

-34

343

Alarm 1 Low (ºC)

10

R/W

0010

4020

-34

343

Alarm 1 High (ºC)

11

R/W

0011

4022

1

343

Prop. Band Heat (ºC)

12

R/W

0012

4024

1

343

Prop. Band Cool (ºC)

13

R/W

0013

4026

0

999

Reset (seconds)

14

R/W

0014

4028

0

999

Rate (seconds)

15

R/W

0015

4030

0

999

Autotune.State

16

R/W

0016

4032

0

999

Autotune.TuneDutyPercent

17

R/W

0017

4034

0

999

Autotune.PeakOverShoot

18

R/W

0018

4036

0

999

Autotune.PeakUnderShoot

19

R/W

0019

4038

0

999

Autotune.InitialTempDeviation

20

R/W

0020

4040

0

999

Autotune.ProcessTripTemp

21

R

0021

4042

-34

343

Delivery Temp (ºF)

22

R/W

0022

4044

-34

343

Setpoint 1 (ºF)

23

R/W

0023

4046

0

999

Proportional Percent (%)

24

R/W

0024

4048

0

999

Integral Percent (%)

25

R/W

0025

4050

0

999

Direvative Percent (%)

26

R/W

0026

4052

0

999

PID Output Percent (%)

27

R/W

0027

4054

0

999

Heater Output Percent (%)

28

R/W

0028

4056

0

999

Cooling Output Percent (%)

30

R

0030

4060

0

1

Pump Status

31

R

0031

4062

0

1,2,3

Heater Status; 1=low, 2=high,
3=low & high

32

R

0032

4064

0

1

Vent Status

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