Honeywell 700 User Manual

15

66-2069—02

using key sequence below at the front panel of the 

700 as follows:

1.

Press and hold BNR-OFF SEQ START/END 

button for 2 seconds.

2.

Press up arrow to change setting from P0 to P1.

3.

Press STORE.

The factory default Modbus address of the 700ACSP and 

700DCSP is 0 and must be changed to a number between 1 

and 32 to establish communication between the signal 

processor and the host control. When more than one signal 

processor is in the network, ensure that each signal processor 

has a unique Modbus address within the range of 1 to 32.

Four Modbus functions are supported:

• 01 Output coil read

• 03 Holding register read

• 06 Preset single holding register

• 16 Preset multiple holding register

NOTES:

—

Before Model 700 signal processors are 

connected to the RS-422 bus, their individual 

Modbus addresses must be set to differing values 

between 1 and 32.

—

The RESET button on front of the 700ACSP or 

700DCSP signal processors is used to set the 

Modbus address.

—

Press and hold the RESET button for two 

seconds and the current address will appear. It 

may be changed with the up or down arrow keys.

—

Pressing the STORE button will store the new 

address.

40001

FLAMECOUNT

Flame count of active viewing head (read only)

0

3425

40002

PROCSTATUS

Processor status bitmask (read only)

bit 1:    flame on relay status (1=relay energized, 0=off)

bit 2:    Processor Lockout status (0 =lockout, 1=not lockout)

bit 3:    Panel access disabled (1=disabled, 0=enabled)

bit 4:    4 - 20 ma output (0=0 to 20, 1=4 to 20)

0

255

40003

FLAMEON

Flame On setpoint (read/write)

3 (S70X)

29

40007

OUTPUTGAIN

Gain of the 0/4-20mA output (read/write)

20

80

40010

IRGAIN

IR sensor gain setting (read/write)

1

9

40012

UVTGAIN

UV tube gain setting (read/write)

1

9

40017

TYPE

Viewing head type bitmask (read only)

bit 0:    UV viewing head

bit 1:    IR viewing head

-

-

40021

TIMEDELAY

Time Delay (read only)

=1 for 700XXSP

1

2

40022

FFRT

Flame failure response time setting in seconds (read/write)

1

3

40023

VERSION

Firmware version (read only)

-

-

40024

MODEL

Model number (read only)

-

-

40084

ERRORCODE

Error code (read/write)

NOTE: writing a non zero number to this register is not allowed 

-

-

40085

BAUD

Baud rate setting (bits/second). Only affects RS-485 

communication, not IRDA. (read, write) 

96=9600 (default), 192=19200. 

The SP and the master device must have the same baud 

settings.

96

192

40086

PARITY

Parity setting. Only affects RS-485 communication, not IRDA. 

(read/write)

0= none (default), 1=odd

0

1

40087

ADDRESS

Modbus address used by RS-485 and IRDA (read/write).   

Each device must have a unique address.

0

247

40089

PROTOCOL

Protocol (read/write)

0=Honeywell protocol, 1=Modbus protocol

0

1