Honeywell S7800A1167 Manual page 40

7800 SERIES S7800A1167 KEYBOARD DISPLAY MODULE
Address Register
(hex) (dec)
0055 40086 BC Flame Amplifier type
0056 40087 BC Purge Time
0057- 40088- BC Diagnostics
0065 40102
0066 40103 Post-Purge time
0067 40104 Valve Proving Mode
0068 40105 Valve Proving option
0069 40106 Valve Proving time
0066- 40103- Unused
007E 40127
007F 40128 BC Remote Command
01B7- 40440- Unused
01B8 40441
01BA 40443 Device Data Ready
01BB 40444 S7800 Device Compatibility
with Current Software
Revision
S7800 Software Revision
Compatibility with Legacy
Software Revisions.
NOTE: "Device Data Ready" and "S7800 Compatibility" bits can be used to quickly check device availability and compatibility
then read/write registers of only these devices.
Response Message Format for Function
Code 17.
This format is device specific and is only available for the 7800
SERIES burner control. See Table 14.
65-0311—02
Table 17. ModBus™ Register Assignments. (Continued)
Read/
Parameter Name Write Format
R
R
R
R
R
R
R
R/W
U16 0 = Standard
1 = Unknown
2 = Amplicheck or missing amplifier
3 = Shutter
U16 Seconds
U16 String codes indicating terminal/jumper state. See Table 20. There
are up to 15 codes. Not all are used for some burner controls.
U16 Seconds
U16 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
U16 1 = Uncommissioned
2 = Commissioned
U16 Seconds
U16 Only one bit in the LSByte must be set, with the exception of bit 15:
Bit 0 =Revert to autonomous operation.
Bit 1 = Don't fire, remain off.
Bit 2 = Go to Hi Fire during Run.
Bit 3 = Go to Lo Fire during Run.
Bit 4 = Remote reset.
Bits 5-7 must be 0.
Bits 8-14 are ignored.
Bit 15: Copied to the control status register. The remote
control status register can be used to verify operation of the
command.
Bits 1-3 must be refreshed at least every 120 seconds, but
not more than once a second, for the burner control to
remain in the commanded state.
U32
U16 Device data was properly received by S7800.
Bit(s)
0
3
4-15
U16 Device is compatible with the S7810M version
Bit
0
3
4-7
Used for indication of S7800 revision compatibility.
Bit(s)
8
9-15
40
Notes
a
Device
RM78XX
EC78XX
Unused
Device
RM78XX
EC78XX
Unused
Compatible with:
Series 2
Future