Display reset, Parameters, S7999b only – Honeywell Local Operator Interface S7999B User Manual
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Fig. 118. COM1 tab.
S7999B Only
COM2 is a Modbus gateway for Building Automation System (BAS)
networking.
Press the COM2 tab (see Fig. 119) to define settings:
• Enable Modbus Gateway: This box must be selected to enable
the COM2 BAS interface.
• Modbus Gateway Speed: Select the baud rate (38400, 19, 200,
or 9600 bps)
• Modbus Gateway Timeout: Defines how long the BAS will wait
after sending a Modbus message before timing out and sending
the next modbus message (currently non-functional; leave at 1.0)
Fig. 119. COM 2 tab.
Display Reset
The user can reset the display and force a power-up by pressing the
Display Reset button. A pop-up dialog box confirming the reset
request displays (Fig. 120) before the reset proceeds.
Fig. 120. Processor Reset.
When the Display is reset, the display will reboot and automatically
seek out the Modbus™ device connected to it. When the search is
complete, the display will return to the home page.
Parameters
A complete list of configurable parameters is shown in Table 61.
Table 60. Status Tables.
Name
Table #
Page #
CH
45
38
DHW
46
39
Burner Control
47
40
Demand and Modulation
48
41
Inlet High Limit
49
41
Fan
50
42
Pump
51
42
Flame Detection
52
42
Statistics
53
43
Stack Limit
54
43
Lead Lag Slave
55
43
Lead Lag Master
56
44
Table 61. Configurable Parameters.
Parameter
Comment
Table
#
Page
#
Boiler Name Name to identify boiler (up to 20
characters)
6
21
Installation
Notes regarding installation (up
to 20 characters)
Installer
password
Change installer password
setting
OEM
password
Change OEM password setting
Factory Data OEM name to associate with
boiler (up to 20 characters)