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10
Operation
(continued)
Table 10-26: Modbus Register List (continued)
Modbus
Register
400096
400100
400108
400128 - 400129
400130 - 400131
400132 - 400133
System pump cycle count
400134 - 400135
400138 - 400139
Table 10-27: Pump Status Codes
Status
92
Forced On from manual pump control
93
Forced On due to Outlet high limit is active
94
Forced On from burner demand
95
Forced On due to Lead Lag slave has demand
96
Forced Off from local DHW priority service
97
Forced Off from Lead Lag DHW priority service
Forced Off from Central Heat anti-
98
condensation
99
Forced Off from DHW anti-condensation
100
Forced Off due to DHW high limit is active
Forced Off from EnviraCOM DHW priority
101
service
102
On due to local CH frost protection is active
On due to Lead Lag CH frost protection is
103
active
104
On due to local DHW frost protection is active
On due to Lead Lag DHW frost protection is
105
active
106
On from local Central Heat demand
107
On from Lead Lag Central Heat demand
108
On from local DHW demand
109
On from Lead Lag DHW demand
114
Protocol
Name
CH pump status
DHW pump status
Boiler pump status
Burner cycle count
Burner run time
DHW pump cycle count
Boiler pump cycle count
Description
APEX
Installation, Operating, & Service Instructions
PUMP STATUS
Description
See Table 10-27.
See Table 10-27.
See Table 10-27.
0-999,999 (U32)
Hours (U32)
0-999,999 (U32)
0-999,999 (U32)
0-999,999 (U32)
Status
110
On from local Mix demand
111
On from Lead Lag Mix demand
112
On from local Central Heat service
113
On from Lead Lag Central Heat service
114
On from local DHW service
115
On from Lead Lag DHW service
116
On from local Mix service
117
On from Lead Lag Mix service
118
On from Lead Lag auxiliary pump X
119
On from Lead Lag auxiliary pump Y
120
On from Lead Lag auxiliary pump Z
121
On, but inhibited by pump start delay
122
On from pump override
123
Off, not needed
124
On from burner demand
125
On from exercise
126
On from local Lead Lag service
127
On from local Lead Lag pump demand
Read (R) /
Write (W)
R
R
R
R/W
R/W
R/W
R/W
R/W
Description
106308-05 - 3/23
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