Laurel Electronics Modbus Protocol For Series 2 Laureate Digital Panel Meters, Counters, Timers & DIN-Rail Transmitters - Manual (Page 8)

- 8 -
E1
E4
E6
E3
E2
a
b
c a b
a b
c d
a b c d
Serial Signal Duplex Jumpers Termination Resistor*
Full None
E6 a = Transmit
E6 c = Receive RS485
Half E6 b + d** E6 c
RS232 Full None None
Serial Signal Duplex Jumpers Termination Resistor*
Full None
E6 a = Transmit
E6 c = Receive RS485
Half E6 b + d** E6 c
RS232 Full None None
* The termination resistor jumper settings should only be selected if the transmitter is the last
device on an RS485 line longer than 200 feet (60 m).
** Attempting to draw more than the rated current will shut down the output.
To reset communications to 9600 baud, command mode, Custom ASCII protocol, and Address 1,
place a jumper at E1 and power up the transmitter.
Analog Output Jumpers
Current E2 a + d
Voltage E2 b + c
Excitation Output* Jumpers
5V, 100 mA E3 a + c; E4 a
10V, 120 mA E3 a + c; E4 b
24V, 50 mA E3 b, E4 none
* The termination resistor jumper
settings should only be selected
if the transmitter is the last device
on an RS485 line longer than 200
feet (60 m).
** Or jumper external BTX to BRX
and ATX to ARX (same effect as
internal jumpers).