Raytech TR–Mark III 250V - Hardware Interfaces; RS232, T-Rex, and USB Ports; External Tap Switch Interface

Instruction Manual TR-Mark III 250V Version 1.10 Preliminary Page 45 of 57
10 Interfaces
10.1 Hardware
1 x USB-Master 1 x USB Slave Extern / Tap Switch
Standard 1.1
example for external warning device
TR-Mark III 250V 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’.
1 x RS232, 9 Pin
Pin 2 TxD (WR100-> Host)
Pin 3 RxD (Host-> WR100)
Pin 5 GND
Interface Parameters:
(fixed,unchangeable)
Port RS232
Baudrate 19200Baud
Databit 8 Bit
Stopbits 1 Bit
Parity No
1 x T-Rex Extension
Pin 1: trex_D0
Pin 2: trex_D1
Pin 3: trex_Busy
Pin 4: GND
e.g. Phase
e.g. Neutral
External
Flashlight
Max 240Vac 2A
ext. ’Go Tap’ trigger
1
2
3
4