Edge [ii] Controller Operation Manual
SECTION 6
– ADVANCED SETUP
OMM-139_E
• 8/25/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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of
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1. Go to:
Main Menu
→
Advanced Setup
→
BST Cascade
→
Cascade Comm
. Two
parameters appear only if
Unit Mode
=
BST Manager
in
BST CLIENT SCREEN
BST MANAGER SCREEN
Figure 6.3.2: BST Cascade: Cascade Communication Screens
2. Configure the following parameters on both
BST Client
and
BST Manager
screens:
•
Unit Address
: The unit’s address in the BST Cascade network. (Range: 1 to 16)
•
Cascade Baud Rate
: Select the rate at which information is transferred in a
communication channel:
9600
,
19200
,
38400
,
115200
bits per second.
•
Plant Failsafe Mode
: Specifies the
plant’s operating mode if there is a loss of
communication with BAS or external sensor (i.e., an outdoor temperature sensor),
either
Constant
or
Shutdown
. If the loss of communication is to the BST Manager
unit, this setting applies to the current unit. Plant Failsafe Mode applies to what the
entire plant does as a whole if it loses communication with the BAS or external sensor.
If set to
Constant Setpt
, the following additional parameter appears:
o
Plant Failsafe Setpoint
: Specifies the
plant’s setpoint if there is a loss of
communication with BAS or header sensor.
•
Network Timeout
: The timeout value before a Modbus Fault is declared due to no
response from the BST Manager unit or (if a Manager) from the BAS. (Range: 5 - 999)
•
Error Threshold
: The number of Modbus Comm errors allowed before invoking a
Modbus Comm Fault. (Range: 1 to 9)
•
Comm Error String
: Displays the number of Comm errors on each Comm port
(client unit). If no valid address is entered for a client unit, it displays
“-” for that
address. The maximum number of error counts is 9.
•
SSD Address
: The Client/Client Device address (for backwards compatibility).
•
Time&Date Sync over BST
:
If enabled, the BST Manager’s time and date are
sent to all BST Clients units; all units in the cascade will then be synchronized.