Chapter 4 _________________________________________________________________ Operation
JUMO _________________________________________________________________________ 119
Use the display/keypad to test the operation of relays.
1.
Open the
MAIN MENU
by pressing any of the arrow buttons.
2.
Select
System
, press the ►arrow button.
3.
Select
Diagnostics
, press the ►arrow button.
4.
Select
Relay tests
, press the ►arrow button.
5.
Select
Invert relay 1...
, press
TEST
. Now the selected relay
output is forced to opposite state. Press
OK
to return to normal
operation.
6.
Press
EXIT
to return to the basic display.
RTEST
Use the serial line command
RTEST
to test the operation of the
relays.
RTEST [
x1 x2 x3 x4
]
where
x
=
ON/OFF
Example:
Activate and then release all four relays.
>rtest on on on on
ON ON ON ON
>
>rtest off off off off
OFF OFF OFF OFF
>
Enter the command
RTEST
without parameters to stop testing.
Operation of the RS-485 Module
The RS-485 interface enables communication between RS-485
network and 907023 transmitter. The RS-485 interface is isolated and
offers a maximum communications rate of 115 200 bits/s. (For
maximum bus length of 1 km, use bit rate 19200 b/s or less.)
