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S7810M
ModBus™ Module
APPLICATION
The Honeywell 7800 SERIES is a microprocessor-based
integrated burner control for automatically fired gas, oil or
combination fuel single-burner applications. The 7800
SERIES is programmed to provide a level of safety, functional
capability and features beyond the capacity of conventional
controls. Functions provided by the 7800 SERIES include
automatic burner sequencing, flame supervision, system
status indication, system or self-diagnostics and
troubleshooting.
The S7810M ModBus™ Module supports remote mounting of
a Keyboard Display Module (KDM), personal computer/PLC
interface for multi-dropped 7800 SERIES subnetworks, and
remote control of a 7800 SERIES Relay Module.
FEATURES
• Multi-dropped communications bus interface.
• Remote control capabilities:
— Standby Hold
— Drive to High Fire
— Drive to Low Fire
— Reset
• Ability to remotely mount a Keyboard Display Module.
• S7810M1029 meets Gastec approval (cannot be reset
through data highway).
• ModBus™ RTU slave device.
SPECIFICATIONS
Model:
S7810M ModBus™ Module.
Electrical Ratings:
Voltage and Frequency: 13 Vdc peak full-wave rectified (+20/-
15%)
Power Dissipation: 2W maximum.
Terminal Ratings:
Power: 13 Vdc peak full-wave rectified.
Earth ground.
ControlBus™ (1,2,3) and Multi-Drop ModBus™ (6,7,8):
5 Vdc at 60 mA maximum.
Electrical Connector (included):
ControlBus™: 208727 8-pin electrical connector.
Environmental Ratings:
Ambient Temperature:
Operating: -40°F to +140°F (-40°C to +60°C).
Storage: -40°F to +150°F (-40°C to +66°C).
Humidity: 85% relative humidity, continuous, noncondensing.
Vibration: 0.5G environment.
Weight: 4 ounces.
Replacement Part: 208727 eight-pin connector.
Approvals: S7810M1029: Gastec EN268, Report 1156791.
Dimensions: See Fig. 1.
1-1/8
(29)
BURNER CONTROL
4-27/32
(123)
Fig. 1. Mounting dimensions of S7810M ModBus™
Module in in. (mm).
PRODUCT DATA
7/16 (11)
MODE
2-3/4
(69)
29/32
(23)
5/32
(4)
M11349A
65-0249-07
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Summary of Contents for Honeywell ModBus S7810M
- Page 1 Electrical Connector (included): APPLICATION ControlBus™: 208727 8-pin electrical connector. Environmental Ratings: The Honeywell 7800 SERIES is a microprocessor-based Ambient Temperature: integrated burner control for automatically fired gas, oil or Operating: -40°F to +140°F (-40°C to +60°C). combination fuel single-burner applications. The 7800 Storage: -40°F to +150°F (-40°C to +66°C).
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Page 2: Installation
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care... - Page 3 S7810M MODBUS™ MODULE MOMENTARY PUSHBUTTON SWITCH RS-485 PC/PLC 13 VDC POWER SUPPLY 8 7 6 5 4 3 2 1 1 2 3 4 5 A B C A B C S7810M MODBUS™ S7800 REMOTE S7830 R7999 MODULE KEYBOARD CONTROLINKS™ EXPANDED 7800 SERIES DISPLAY...
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Page 4: Operation
S7810M MODBUS™ MODULE OPERATION 4. Wire routing: a. Do not route the communication cable in conduit with The S7810M ModBus™ Data ControlBus™ Module has two line voltage circuits. communications ports. The ControlBus™ communications port b. Do not route the communication cable close to the allows communications on a bus that contains a 7800 SERIES ignition transformers. - Page 5 S7810M MODBUS™ MODULE Table 3. Query Message Format for Function Codes 3 and 4. Function Starting Starting Number of Number of Slave Address Code Address High Address Low Addresses High Addresses Low Table 4. Response Message Format for Function Codes 3 and 4. Slave Address Function Code Byte Count...
- Page 6 S7810M MODBUS™ MODULE Table 10. ModBus™ Register Assignments. Address Register Read/ (hex) (dec) Parameter Name Write Format Notes 0000 40001 Burner Control (BC) Fault See Table 17. Non-zero value = Lockout number. Code 0001 40002 BC Fault String Code See Table 16. Lockout text. 0002 40003 BC Sequence State...
- Page 7 S7810M MODBUS™ MODULE Table 10. ModBus™ Register Assignments. (Continued) Address Register Read/ (hex) (dec) Parameter Name Write Format Notes 0067 40104 Valve Proving Mode 0 = Valve Proving is not enabled 1 = Enabled before Run 2 = Enabled after Run 3 = Enabled before and after Run 4 = Enabled split half before and half after Run 0068...
- Page 8 S7810M MODBUS™ MODULE Table 11. ModBus™ R7999 Register Assignments. (Continued) Address Register (hex) (dec) Parameter Name Format Notes 0084 40133 R7999 air position 0-4095 0085 40134 R7999 active fuel 0-4095 position 0086 40135 R7999 FGR position 0-4095 0087 40136 R7999 fuel ID 0 = Fuel 1 1 = Fuel 2 0088-...
- Page 9 S7810M MODBUS™ MODULE Table 13. ModBus™ R7999 Register Assignments. Address Register (hex) (dec) Parameter Name Format Notes 00D0- 40209- R7999 Profile See Table 23. 015F 40352 0160 40353 Fuel 1 closed endpoint 0-4095 0161 40354 Fuel 1 open endpoint 0-4095 0162 40355 Fuel 2 closed endpoint...
- Page 10 S7810M MODBUS™ MODULE Table 13. ModBus™ R7999 Register Assignments. (Continued) Address Register (hex) (dec) Parameter Name Format Notes 01AA 40427 R7999 ControlBus™ revision U16H Bits 0-3 FlameNet™ and R7999 display. R7999 Compatibility Code for U16L ZM7999 01AB 40428 R7999 Software Build Code 0x0000-0xFFFF 01AC 40429...
- Page 11 S7810M MODBUS™ MODULE NOTES: 1. Due to the amount of data provided by the R7999, some registers contain two parameters, one in the Data Hi byte and one in the Data Lo byte. Using Register 40429 as an example: The format for “Abort Code” is “U16H”, meaning the Data Hi byte is the parameter’s value, and for “Abort Code Count”, with a format of “U16L”, the Data Lo byte is the parameter’s value.
- Page 12 S7810M MODBUS™ MODULE 7800 SERIES Sequence State Codes Table 15. 7800 SERIES Sequence State Codes and Associated register code values. (Continued) Sequence state codes are provided by the Burner Control. Each code is translated into two string codes for displaying an String Code Burner associated message in two lines.
- Page 13 S7810M MODBUS™ MODULE Table 15. 7800 SERIES Sequence State Codes Table 15. 7800 SERIES Sequence State Codes and Associated register code values. (Continued) and Associated register code values. (Continued) String Code Burner String Code Burner 7800 SERIES Control 7800 SERIES Control Register Sequence...
- Page 14 S7810M MODBUS™ MODULE 7800 SERIES String Codes Table 16. 7800 SERIES String codes. (Continued) Table 16 contains a listing of all string codes provided by the String Code String S7810M. The associated string is not implemented in the HIGH LIMIT S7810M;...
- Page 15 S7810M MODBUS™ MODULE Table 16. 7800 SERIES String codes. (Continued) Table 16. 7800 SERIES String codes. (Continued) String Code String String Code String PURGE DELAY Input B T17 = 0 PURGE FAN SW OFF Input B T17 = 1 PURGE FAN SW ON PreIgn ILK T17 = 0 PURGE FAN SWITCH PreIgn ILK T17 = 1...
- Page 16 S7810M MODBUS™ MODULE 7800 SERIES Fault Codes Table 16. 7800 SERIES String codes. (Continued) Table 17 is a complete list of fault codes that may appear in the String Code String fault code register. The Fault String Code register will contain Jumper 3 Clipped) the corresponding String code identified in the table.
- Page 17 S7810M MODBUS™ MODULE Table 17. 7800 SERIES Fault Codes. (Continued) Table 17. 7800 SERIES Fault Codes. (Continued) Fault Fault Fault Fault Code Fault Message String Code Fault Message String (Reg (NOTE: FAULT n: is not in Code (Reg (NOTE: FAULT n: is not in Code 40001) the Fault and Strings Code)
- Page 18 S7810M MODBUS™ MODULE Table 17. 7800 SERIES Fault Codes. (Continued) Table 17. 7800 SERIES Fault Codes. (Continued) Fault Fault Fault Fault Code Fault Message String Code Fault Message String (Reg (NOTE: FAULT n: is not in Code (Reg (NOTE: FAULT n: is not in Code 40001) the Fault and Strings Code)
- Page 19 S7810M MODBUS™ MODULE Table 17. 7800 SERIES Fault Codes. (Continued) Control. The fault code will then be translated to the appropriate first and second line messages as shown in Table Fault Fault 17 for use by the UMC800 Operator Interface. Code Fault Message String...
- Page 20 S7810M MODBUS™ MODULE Table 21. Burner Control Type Codes (Continued) Table 21. Burner Control Type Codes CODE DEVICE DESCRIPTION CODE DEVICE DESCRIPTION RM7898A (undefined) R7140G RM7800E R7140L RM7800G R7140M RM7800L RM78xx RM7800M EC7810A RM7838A EC7820A RM7838B EC7830A RM7840E EC7850A RM7840G EC7885A RM7840L EC7890A...
- Page 21 S7810M MODBUS™ MODULE R7999 Profile Data Structure R7999 Fault History Data Structure If an R7999 uses less than 24 indexes for its profile, then the This information is repeated 5 times for a total of 6 fault history unused index data will be zero (refer to “Number of Profile structures.
- Page 22 S7810M MODBUS™ MODULE R7999 Status Message Table 25. R7999 Status Message. (Continued) The R7999 Status Message is added to an indexed circular Description—R7999 circular buffer data buffer once a second. An 8-second history of the data is structure of registers 40161-40208. Some available in registers 40160-40208.
- Page 23 S7810M MODBUS™ MODULE R7999 Fault Text The R7999 Fault Text is shown indexed by hexadecimal values. A value of 0x11 means there is currently no fault. Table 26. R7999 Fault Text. Fault Code (hexadecimal) Fault Text 0x11 No Fault 0x13 MV On 0x14 HF and LF on...
- Page 24 S7810M MODBUS™ MODULE Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2007 Honeywell International Inc. 65-0249—07 M.S. Rev. 05-07...