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MODBUS Installation and Operation Manual

 

 

9

HT# 059266-00A

Multi-MOD 

reg / 

VarIaBle#

DeSCrIPTIOn

MUlT

 ♦1

(if not 1)

UOM

range / STaTeS / SPeCIal 

ValUeS

reaD 

Only

190

Reset Ratio

0=1:4, 1=1:3, 2=1:2, 3=1:1 .5, 

4=1:1 .25, 5=1:1, 6=1 .25:1, 

7=1 .5:1, 8=2:1, 9=3:1, 10=4:1

191

Lead Stage Rotation Mode

0=Manual, 1=Time, 2=Last-On

192

Periodic Rotation Interval

Hours

1 - 999

193

Setback

10

Psi,

Psi,

°C,

°F

0 - 7 .5psi

0 - 75psi, 

°C, 

°F

194

Set point

10

Psi,

Psi, 

°C, 

°F

0 .0-15 .0psi, 0 .0-30 .0psi

0-100psi, 

-40 to +122°C,

 -40 to +250°F

195

System Run-on

Minutes

0 to 360

196

Standby Delay

Minutes

1 - 60

197 through

216

Stage Relay(Stages 1-20)

0=Off, 1=On

X

217 through

236

Modulation Level(Stages 1-20)

%

0 to 100

X

237

System Relay

0=Off, 1=On

X

238

System Sensor

10

Psi,

Psi, 

°C, 

°F

0 .0 to 15 .0psi, 

0 .0 to 30 .0psi, 0 - 100psi, 

-40 - +122°C, 

-40 - +250°F

(32000 =Open, 32001=Shorted) 

♦2

X

239

Calculated Target

°C, °F

21 - 122°C, 70 - 250°F

X

Multi-MOD Platinum notes

♦1

   If specified, divide a read value by this to obtain the actual value – Multiply desired value by this before writing .

♦2

   For variables that specify them, if a read value is a special value (32000 - 32005), do not divide by ‘MULT' .

♦3   

Strings are packed 2 characters per register, most significant byte first .

♦4

   Multi-register values are stored 

big endian

 (first register x 65536 + second register = value) .

note:

   All variables are stored as ‘Holding Registers’ . MODBUS functions 

   

• ‘Read Holding Registers’ (function code 3), 

   

• ‘Write Single Register' (function code 6), 

   

• and ‘Write Multiple Registers’ (function code 16) are supported .

note:

   All variables with multiple UOM’s depend upon the value of ‘Input Mode’ to determine which to 

use . Objects with only °F/°C UOM’s default to °F when ‘Input Mode’ is not temperature .

note:

   ‘Offset Temp’, ‘Reset Ratio’ and ‘Calculated Target’ are not used 

unless ‘Input Mode’ is set to ‘Reset °F’ or ‘Reset °C’ .

note:

   When writing to the ‘Manual Modulation Level’ of a stage, the ‘Stage Mode’ of that stage will change to ‘Manual’ .

note:

   Use the Multi-Mod Platinum Installation and Operation manual for supplementary information .

Summary of Contents for MODBUS RTU RS485

Page 1: ...or safety control all equipment must have its own certified limit and safety controls required by local codes The installer must verify proper operation and correct any safety problems prior to the in...

Page 2: ...Configuration 3 MODBUS Communication Options 3 MAC Address 3 Baud 3 Troubleshooting 3 HWr Platinum MODBUS Variable list 4 HWrQ Platinum MODBUS Variable list 6 Multi MOD Platinum MODBUS Variable list...

Page 3: ...US COMMUnICaTIOn OPTIOnS SELECT MENU Maintenance Network Settings Multi MOD Platinum SELECT MENU Settings More Settings Remote Interface Network Settings All Other Platinum Controls Before connecting...

Page 4: ...f 27 Sensor Type 0 F 1 C 28 Minimum Water Temp C F 21 71 C 70 170 F 29 Outdoor Sensor C F 40 122 C 40 250 F 32000 Open 32001 Shorted 2 X 30 Outdoor Sensor Trim C F 3 3 C 5 5 F 31 Offset Temperature C...

Page 5: ...Single Register function code 6 and Write Multiple Registers function code 16 are supported note All variables with multiple UOM s depend upon the value of Input Mode to determine which to use note Us...

Page 6: ...Cut off C F 0 25 C 30 75 F 87 DHW Call Mode 0 No Priority 1 Priority 88 Day Light Saving 0 Enable 1 Disable 89 Sensor Fault Mode 0 Stages On 1 Stages Off 90 Fast Cool Down 0 Minimum Target Temp 1 Off...

Page 7: ...are packed 2 characters per register most significant byte first 4 Multi register values are stored big endian first register x 65536 second register value note All variables are stored as Holding Re...

Page 8: ...0 60 79 Input Mode 0 F 1 C 2 15psi 3 30psi 4 100psi 5 200psi 6 300psi 7 HWR 8 Reset F 9 Reset C X 80 Lead Stage 0 19 A T 81 Pre purge Delay 10 Minutes 0 0 10 0 82 through 101 Lockout Input Stages 1 20...

Page 9: ...ecified divide a read value by this to obtain the actual value Multiply desired value by this before writing 2 For variables that specify them if a read value is a special value 32000 32005 do not div...

Page 10: ...ted 2 X 31 Outdoor Sensor Trim C F 3 3 C 5 5 F 32 Operation Mode 0 Burner valve 1 District Steam 33 Output Relay 0 Off 1 On X 34 Panel Date Days since 1 1 1981 0 36500 35 Panel Time Minutes since 0 00...

Page 11: ...mation MPCQ PlaTInUM MODBUS VarIaBle lIST MPCQ reg VarIaBle DeSCrIPTIOn MUlT 1 if not 1 UOM range STaTeS SPeCIal ValUeS reaD Only 1 3 Model 6 Character string 3 X 4 13 Serial Number 20 Character strin...

Page 12: ...tem Run on Minutes 0 60 237 System Relay 0 Off 1 On X 238 Throttle Range 2 psi 0 5 5 0 239 Heat Establish Pressure 10 psi 0 5 5 0 MPCQ Platinum Boiler Type Table Boiler Type LEAD Special value Up to T...

Page 13: ...o 0 note Use Setback if Operation Mode is set to 1 note Use Last Stage Hold Min Runtime Purge Reaction Time Standby Delay when Logic Mode is set to 0 note Use Reaction Time when Lead Stage Rotation Mo...

Page 14: ...6 Day Light Saving 0 Enable 1 Disable 27 Sensor Fault Mode 0 OutputOn 1 OutputOff 28 Valve at Freezing 0 100 29 Sensor Mode 0 F 1 C X 30 Motor Time Seconds 120 600 31 Manual Valve Target 0 100 32 Nigh...

Page 15: ...gister value note All variables are stored as Holding Registers MODBUS functions Read Holding Registers function code 3 Write Single Register function code 6 and Write Multiple Registers function code...

Page 16: ...building systems including but not limited to the heating system boilers or electrical power system that is required for proper operation of any controls or other equipment installed by Heat Timer Co...

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