S7999B SYSTEM DISPLAY
17
65-0283—2
Wiring
The S7999B must be appropriately wired for both power and
communications. An external 12V power supply with an
appropriate power rating is connected to both pins 1 and 2 to
power the device.
Communication is done over two RS-485 busses:
• COM 1: a bus directly to the R7999 device or to the
Modbus™ network that connects all S7999Bs together
(System Modbus™)
• COM 2: a bus to the Modbus™ network containing
S7810M devices and UDC controllers.
S7999B wiring connections are listed in the table below:
Fig. 14. S7999B connector terminals.
An RJ45 jack can optionally be wired with a 10 base-T
Ethernet cable for Internet access.
The S7999B communicates with the UDC controllers via a 3-
wire RS-485 interface using the Modbus™ protocol.
The System S7999B communicates with Local S7999Bs via a
3-wire RS-485 interface using the Modbus™ protocol.
The S7999B is compatible with R7999 build 140 and newer,
and with S7810M build 6020 and newer.
STARTING THE DISPLAY
Home Page
Make sure a screen similar to Fig. 15, 16, or 17 appears after
the S7999B is completely powered up.
The Home page is the main screen that leads to all other
pages and is used to select one of the following actions:
• Commission the ControLinks™ Fuel/Air Ratio Control
(attached to COM 1 port only):
• Commission Button: Press to start commissioning a
new system or modify/review the commission
settings of an existing systems.
NOTE: ControLinks™ Fuel/Air Ratio Controls (R7999)
located on burner systems viewable from the
Modbus™ network can not be commissioned
through the S7999B. The R7999 can only be
commissioned when it is attached to the COM 1 port
and the Home page view context is set to “Local
Fuel/Air Control”.
• Monitor a burner system:
• Press the icon corresponding to the part of the
system you wish to monitor. Press the Fuel/Air
Control Configuration button to view more
parameter settings of the Fuel/Air Ratio control.
• Monitor application controller.
• S7999B Setup and Diagnostics.
• Press the setup button to configure S7999B
settings.
• Verify the version number of the S7999B software,
adjust display settings, test the display and reset
the S7999B.
The number of actuators displayed on this page will vary
depending on the number of actuators previously wired to the
ControLinks™ Fuel/Air Ratio Control and configured via the
S7999B configuration tool.
Fig. 15. Switchable S7999B Home Page.
Table 1. 9-pin Connector Terminals
Pin #
Function
1
12V input
2
12V input
3
Ground (Power, COM 1, COM 2)
4
COM 1 (b) to R7999 (B) or System S7999B
Modbus™ Data +
5
COM 1 (a) to R7999 (A) or System S7999B
Modbus™ Data -
6
Not used
7
Not used
8
COM 2 (a) to S7810M/UDC Modbus™ Data -
9
COM 2 (b) to S7810M/UDC Modbus™ Data +
1 2 3 4 5 6 7 8 9
M24233
COMMON (c)
COM1 (b)
COM1 (a)
N/C
N/C
COM2 (a)
COM2 (b)
+12V
