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PRODUCT DATA

65-0249-07

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.

Fig. 1. Mounting dimensions of S7810M ModBus™

Module in in. (mm).

M11349A

BURNER CONTROL

2-3/4

(69)

29/32

(23)

5/32

(4)

4-27/32

(123)

1-1/8

(29)

7/16 (11)

MODE

Summary of content (24 pages)

PAGE 1
S7810M ModBus™ Module PRODUCT DATA 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.
PAGE 2
S7810M MODBUS™ MODULE INSTALLATION When Installing this Product... 1. 2. 3. 4. 5. 6. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition. Check the ratings given in the instructions and marked on the product to make sure the product is suitable for your application. The installer must be a trained, experienced flame safeguard technician. Disconnect the power supply before beginning installation to prevent electrical shock and equipment damage.
PAGE 3
S7810M MODBUS™ MODULE MOMENTARY PUSHBUTTON SWITCH RS-485 BUS PC/PLC A B 4 2 C 13 VDC POWER SUPPLY 3 1 5 L1 L2 6 6 5 5 2 87654321 S7810M MODBUS™ MODULE 12345 S7800 REMOTE KEYBOARD DISPLAY 7 MODULE 7800 SERIES RELAY MODULE 3 - + GND INPUT 3 RS-485 REPEATER A B C A B C S7830 EXPANDED ANNUNCIATOR R7999 CONTROLINKS™ CONTROLLER 5 O U TPU T + – GND 1 4 5 5 2 3 87654321 S7810M MODBUS™ MODULE 7800 SERIES RELAY MODULE 12345 S7800 SERIES 5 7800 SERIES RELAY MODULE 1 MULTI-DROP R
PAGE 4
S7810M MODBUS™ MODULE 4. 5. Wire routing: a. Do not route the communication cable in conduit with line voltage circuits. b. Do not route the communication cable close to the ignition transformers. c. Route the communication cable outside of conduit if properly supported and protected from damage. d. Route the communication cable so that all devices are connected in a daisy chain configuration. See Fig. 3. Maximum wire lengths: a. Communications bus, 4000 feet (1219 meters). b.
PAGE 5
S7810M MODBUS™ MODULE Table 3. Query Message Format for Function Codes 3 and 4. Function Code Slave Address 01 03 Starting Starting Number of Number of Address High Address Low Addresses High Addresses Low 00 0A 00 01 CRC CRC A4 08 Table 4. Response Message Format for Function Codes 3 and 4. Slave Address Function Code 01 Byte Count 03 02 Data High 00 Data Low 22 CRC CRC 38 5D Table 5. Query Message Format for Function Code 6 (Broadcast is supported by using a slave address of 00).
PAGE 6
S7810M MODBUS™ MODULE Table 10. ModBus™ Register Assignments. Address Register (hex) (dec) Parameter Name Read/ Write Format Notes 0000 40001 Burner Control (BC) Fault Code R U16 See Table 17. Non-zero value = Lockout number. 0001 40002 BC Fault String Code R U16 See Table 16. Lockout text. 0002 40003 BC Sequence State R U16 See Table 15 (current only if Fault code = 0). 0003 40004 BC State String Code (line 1) R U16 See Table 16. Simulates Line 1 of S7800.
PAGE 7
S7810M MODBUS™ MODULE Table 10. ModBus™ Register Assignments.
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 U16 0-4095 0085 40134 R7999 active fuel position U16 0-4095 0086 40135 R7999 FGR position U16 0-4095 0087 40136 R7999 fuel ID U16 0 = Fuel 1 1 = Fuel 2 00880089 4013740138 R7999 cycles U32 0—1,000,000 Same as register 40410. 008A 40139 R7999 diagnostic bits.
PAGE 9
S7810M MODBUS™ MODULE Table 13. ModBus™ R7999 Register Assignments. Address Register (hex) (dec) Parameter Name Format Notes 00D0015F 4020940352 R7999 Profile See Table 23.
PAGE 10
S7810M MODBUS™ MODULE Table 13. ModBus™ R7999 Register Assignments. (Continued) Address Register (hex) (dec) 01AA 40427 01AB 40428 01AC 40429 Parameter Name Format R7999 ControlBus™ revision U16H R7999 Compatibility Code for ZM7999 U16L R7999 Software Build Code U16 Notes Bits 0-3 FlameNet™ and R7999 display.
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 Sequence state codes are provided by the Burner Control. Each code is translated into two string codes for displaying an associated message in two lines. Each code is also translated into burner control state bits which may be used to generate and control system diagrams on an operator interface. Table 15. 7800 SERIES Sequence State Codes and Associated register code values.
PAGE 13
S7810M MODBUS™ MODULE Table 15. 7800 SERIES Sequence State Codes and Associated register code values. (Continued) Table 15. 7800 SERIES Sequence State Codes and Associated register code values.
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 S7810M. The associated string is not implemented in the S7810M; it is a string equivalent to that displayed on the S7800 Keyboard Display Module or similar device.
PAGE 15
S7810M MODBUS™ MODULE Table 16. 7800 SERIES String codes. (Continued) String Code 89 Table 16. 7800 SERIES String codes.
PAGE 16
S7810M MODBUS™ MODULE Table 16. 7800 SERIES String codes. (Continued) 7800 SERIES Fault Codes String Code Table 17 is a complete list of fault codes that may appear in the fault code register. The Fault String Code register will contain 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.
PAGE 18
S7810M MODBUS™ MODULE Table 17. 7800 SERIES Fault Codes. (Continued) Fault Code (Reg 40001) Table 17. 7800 SERIES Fault Codes.
PAGE 19
S7810M MODBUS™ MODULE Table 17. 7800 SERIES Fault Codes. (Continued) Fault Code (Reg 40001) 246 Control. The fault code will then be translated to the appropriate first and second line messages as shown in Table 17 for use by the UMC800 Operator Interface. Fault String Code (Table 16) Fault Message (NOTE: FAULT n: is not in the Fault and Strings Code) Table 19. Expanded Annunciator First Out Code.
PAGE 20
S7810M MODBUS™ MODULE . Table 21. Burner Control Type Codes (Continued) Table 21.
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 unused index data will be zero (refer to “Number of Profile Points” parameter to get the actual number of profile points). Note that the profile information will be zero for an unconfigured or disconnected R7999. Up to 24 sets of data are used to build the profile. See Table 23.
PAGE 22
S7810M MODBUS™ MODULE R7999 Status Message Table 25. R7999 Status Message. (Continued) The R7999 Status Message is added to an indexed circular buffer once a second. An 8-second history of the data is available in registers 40160-40208. Table 25 identifies the register data structure which is the same for each buffer, 0-7. Register 40160, bits 0-2, points to the oldest buffer information, so if the Buffer Index is 3, then buffer order from oldest to newest would be: 3, 4, 5, 6, 7, 0, 1, 2.
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.
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.