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S7810M MODBUS™ MODULE
13
65-0249—07
29
MAIN IG HOLD:
MANUAL-OPEN
SWITCH
67
72
4010h
30
RUN
95
0
0020h
31
RUN PV HOLD:
LOW FIRE
SWITCH
96
58
4020h
32
PVHOLD IGN
77
46
4008h
33
PV HOLD:
PV HOLD
SWITCH
77
45
4008h
34
RUN/LOWFIRE:
TEST
RUN/TEST
SWITCH
97
98
4020h
35
POSTPURGE
83
0
0040h
36
STATE
UNKNOWN
31
0
0000h
37
RESET/ALARM
TEST
111
0
6000h
38
SAFETY START 102
105
4002h
39
SAFETY1-1
102
2
0008h
40
SAFETY1-2
102
3
0008h
41
SAFETY1-3
102
4
0008h
42
SAFETY1-4
102
5
0008h
43
SAFETY1-5
102
6
0008h
44
Blank
0
0
A000h
45
PREIGNITION
84
0
0080h
46
SAFETY 1
102
1
0008h
47
PILOT STAB.
79
0
0008h
48
MAIN TRIAL
68
0
0010h
49
MAIN TRIAL
68
0
0010h
50
STANDBY
HOLD:
RUN/TEST
SWITCH
104
98
4002h
51
STATE 51
31
0
A000h
52
STATE 52
31
0
A000h
53
SAFETY 1:
RUN/TEST
SWITCH
102
98
4008h
54
STATE 54
31
0
A000h
55
STANDBY
HOLD:
PURGE FAN
SWITCH
104
92
4002h
56
STATE 56
31
0
A000h
57
PURGE HOLD:
PURGE FAN
SWITCH
93
92
4004h
Table 15. 7800 SERIES Sequence State Codes
and Associated register code values. (Continued)
Register
40003
7800 SERIES
Sequence
State
String Code
Uses
mm:ss
Burner
Control
State
Bits
Line 1 Line 2
58
STANDBY
HOLD FLAME
DETECTED
104
35
4002h
59
STANDBY
HOLD COMB.
PRESSURE
104
26
4002h
60
VP START
210
0
0100h
61
VP MV2 ON
211
0
0100h
62
VP LOW DLY
212
0
4100h
63
VP LOW TST
213
0
0100h
64
VP MV1 ON
214
0
0100h
65
VP HIGH DLY
215
0
4100h
66
VP HIGH TST
216
0
0100h
67
INITIATE HOLD:
AC
AC PHASE
ERROR
49
10
4001h
68
STANDBY
HOLD:
PRE-IGNITION
ILK
104
85
4002h
69
SETUP
NEEDED
217
0
A000h
70
STATE 70
31
0
A000h
71
BURNER OFF:
T6
BURNER
SWITCH
22
23
4002h
72
STANDBY
HOLD: T6 (EA)
HOLD MSG
184
30
4002h
73
STANDBY
HOLD: (EA)
CIRCUIT FAULT
184
25
4002h
74
STANDBY
HOLD (EA)
184
Varies
4002h
75
PURGE HOLD
(EA)
185
Varies
4004h
76
Unused
0
Varies
0000h
77
Unused
0
Varies
0000h
78
Unused
0
Varies
0000h
79
STANDBY
HOLD (EA)
184
Varies
4002h
80
STANDBY
HOLD (EA)
184
Varies
4002h
81
STANDBY
HOLD (EA):
VALVE
CLOSURE
184
109
4002h
82
STANDBY
HOLD (EA)
OTHER PII
184
75
4002h
Table 15. 7800 SERIES Sequence State Codes
and Associated register code values. (Continued)
Register
40003
7800 SERIES
Sequence
State
String Code
Uses
mm:ss
Burner
Control
State
Bits
Line 1 Line 2