10 Interfaces
10.1 Hardware
1 x
RS232
, 9 Pin
1 x
T-Rex
Extension
1 x
USB
-Host
1 x USB Device
Extern
/ Tap Switch
USB 2.0
Standard type A and B
example for
external warning device
TR-MARK III offers 1 relay contact between
Pin 3 and Pin 4.
Pin 1 & 2 is the Tap Changer input. Shorten
those two pins by a working contact to start
measurement when using ‘Go Tap’.
90100-2.20 Instruction Manual TR-MARK III 250V
Page 49 of 68
Pin 2
TxD (TR-> Host)
Pin 3
RxD (Host-> TR)
Pin 5
GND
Interface Parameters:
(fix, not changeable)
Port
RS232
Baudrate
19200Baud
Databit
8 Bit
Stopbits
1 Bit
Parity
No
Pin 1: trex_D0
Pin 2: trex_D1
Pin 3: trex_Busy
Pin 4: GND