FUTEK IPM500 (D500) Digital Display - Manual (Page 45)

45
TEDS INTERFACE WIRING
TEDS DATA
TEDS GROUND
ISOLATED GROUND
RTS
RX
TX
GROUND
RTS
TRANSMIT
RECEIVE
Computer
Meter
Sensor
DATA
GROUND
Notes:
• Do not connect RS-232 pins 1-4 if using a USB connection.
• Do not connect TEDS ground to isolated ground.
• RTS line may have to be disconnected for certain software applications. RTS pin cannot be
disconnected when using a USB connection.
• RTS line must be un-asserted through software for normal USB operation. Please see your
software manual. If software does not allow un-assertion of RTS line, you must use RS232
without RTS connected. The meters use RTS to gain control of the TEDS card.
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