Status And Fault Messages For Profibus Dp - Honeywell BCU 460 Technical Information

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6 .17 .5 Status and fault messages for PROFIBUS DP

This table can be used to program the master.
Input bytes (BCU ➔ master)
Byte 2 Display
00
0
A0
0
A0
0
01
1
A1
*
A1
1
02
2
A2
*
03
3
A3
*
04
4
A4
*
05
5
A5
*
5 0
C0
5
06
6 Safety time on start-up, main burner
A6
*
C2
6
2
6
07
7 Flame proving period, main burner
A7
*
BCU 460, BCU 465 · Edition 03.16l
Status signal
Byte 0, Bit 2 = 0
Start-up position/standby
Post-ventilation
Cooling
Waiting time/Pause time
Pre-ventilation
Safety time on start-up
Flame proving period
Operation
Waiting time, main burner
Fault signal
Byte 0, Bit 2 = 1
Flame simulation
Start-up without flame signal
Flame failure during flame proving period
Flame failure during operation
Flame simulation, main burner
Air monitor break contact check
Fault Position indicator during start-up
Start-up without flame signal, main burner
Fault Position indicator during safety time
Fault Air supply during safety time
Flame failure during flame proving period, main burner
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