EVCO EVD120 User Manual
Page 13
13
EVD120
Programming
14. Choose Exit, then Exit again.
15. Switch off the power supply of EVD120.
16. Disconnect terminals “1”, “2” and “3” of EVD120 from the RS-485 output of the serial interface.
2.4
Restoring well-known network parameters of EVD120 temporarily using the
programming key EVKEY (in order to change them using the software Params
Manager)
Operate as follows:
•
make sure to have the programming key EVKEY
•
switch on the power supply of EVD120 and wait 4 s at least since the power supply has been switched on
•
connect EVKEY to port 2 of EVD120: the LED of EVKEY will shed green light
Fig. 5 - Connecting EVKEY to port 2 of EVD120.
•
press the button of EVKEY 1 s: LED Prog of EVD120 will flash and the LED of EVKEY will shed green light and
red light alternatively.
The temporary network parameters are the following ones:
•
the instrument address has value 248
•
the baud rate has value 9,600 baud
•
the parity has value even.
Keep operating as follows:
•
disconnect EVKEY from port 2 of EVD120
•
operate as related in paragraph 2.3 without switching off the power supply of EVD120 before having changed its
network parameters and holding in consideration the instrument address has value 248 (step 7.)
(5)
.
2.5
Learning/Programming the instrument address of EVD120 using the pro-
gramming key EVKEY
2.5.1
Learning the instrument address of EVD120 using the programming key EVKEY
Operate as follows:
•
make sure to have the programming key EVKEY
•
switch on the power supply of EVD120 and wait 4 s at least since the power supply has been switched on
•
connect EVKEY to port 2 of EVD120: the LED of EVKEY will shed green light
Fig. 5 - Connecting EVKEY to port 2 of EVD120.
(5)
if you switch off the power
supply of EVD120 before having
changed its network parameters, you
will restore its not well-known net-
work parameters