Honeywell 800 Series Manual page 18

HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
Register Name
40001 FLAMECOUNT
40002 PROCSTATUS
40003 FLAMEON
40007 OUTPUTGAIN
40010 IRGAIN
40012 UVTGAIN
40017 TYPE
40021 TIMEDELAY
40022 FFRT
40023 VERSION
40024 MODEL
40084 ERRORCODE
40085 BAUD
40086 PARITY
40087 ADDRESS
40089 PROTOCOL
66-2069EP—08
Table 4. MODBUS registers map.
Description
Flame count of active viewing head (read only)
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)
Flame On setpoint (read/write)
Gain of the 0/4-20mA output (read/write)
IR sensor gain setting (read/write)
UV tube gain setting (read/write)
Viewing head type bitmask (read only)
bit 0: UV viewing head
bit 1: IR viewing head
Time Delay (read only)
=1 for 700XXSP
Flame failure response time setting in seconds (read/write) 1
Firmware version (read only)
Model number (read only)
Error code (read/write)
NOTE: writing a non zero number to this register is not
allowed
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.
Parity setting. Only affects RS-485 communication, not
IRDA. (read/write)
0= none (default), 1=odd
Modbus address used by RS-485 and IRDA (read/write).
Each device must have a unique address.
Protocol (read/write)
0=Honeywell protocol, 1=Modbus protocol
18
Minimum Maximum
0 3425
0 255
3 (S70X) 29
20 80
1 9
1 9
- -
1 2
3
- -
- -
- -
96 192
0 1
0 247
0 1