8545-M838-O1 Rev D 825 Installation & Technical
MAIN PC BOARD, CONT.
J9 – NODE TERMINATION
This jumper is for the RS-485 node termination selection. When installed, the RS-485 node
is terminated indicating the 825 is the last device on the RS-485 bus. If the 825 is not the last
device on the RS-485 bus (e.g., it is in the middle of the bus), then it must be un-terminated
and jumper J9 must be open (on one pin only or removed).
J10 – CAL INHIBIT
This jumper is for the CAL INHIBIT selection. When installed, this jumper inhibits (prevents)
calibration of the 825 indicator.
When removed, CAL will be shown (to the right of the display above the Navigation keys) to
indicate calibration is allowed and calibration of the 825 indicator can be performed.
J11 – ON/OFF KEY ENABLE/DISABLE
This jumper is used to enable or disable the ON/OFF key. NOTE: There are currently two
(2) style boards used in the 825. One style has a wire soldered in place for the J11 jumper.
The other style has pins and a physical jumper installed.
If your board style has the soldered wire J11 jumper, the ON/OFF key will be ENABLED
(factory default setting). In order to DISABLE the ON/OFF key, the wire jumper must be cut.
If your board style has the pins and jumper, installing the jumper will ENABLE the ON/OFF
key. Removing J11 or placing the jumper on one pin only, will DISABLE the ON/OFF key.
AUTO POWER-ON JUMPER – P13 (PINS 2 AND 4)
When a jumper is installed across pins 2 and 4 of the P13 connector, the indicator will power
on automatically whenever power is applied without pressing the ON/OFF key. If power is
lost momentarily and then reapplied, the indicator will turn on without pressing the ON key.
Connectors
P3 = PCI Express connector for standard Scale Input Board (825-SIB).
P4 to P12 = PCI Express connectors for 825 option cards.
P13 = Program connector.
P14 = Power connector.
P15 = BDM connector (For Factory Use only).
P16 = I/O (Input/Output) 10 position terminal block.
P17 = USB B Device connector.
P18 = USB A Host (2) and 10/100 LAN connector.
P19 = COM4 (RS-232 only) 5 position terminal block.
P20 = COM3 (RS-232/RS-485) 5 position terminal block.
P21 = COM2 (RS-232/20mA) 5 position terminal block.
P22 = COM1 (RS-232 only) 5 position terminal block.
To Next Page
Loading...
