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Data Interface and Optional Accessories
8.2
Communication Protocols
The communication with the EFOY Pro fuel cells is possible via RS232 and
RS485 data connection. Also a direct modem connection for external
control and observation is possible.
Following protocols are supported:
-
SIO / clear text (RS232, factory settings)
-
MODBUS RTU (RS232 and RS485)
The settings can be changed via the Operating panel OP2:
Data interfaces
If MODBUS RTU protocol should be used you have to choose which
interface side is in use. You have to activate the interface on the front and
back side in the menu "Communication":
1.
Press and hold [ok] and [menu] at the same
time for 2 seconds. The expert menu appears.
2.
Press [] to select a submenu
"Communication" and press [ok] to access.
3.
Press [][] to select one of the following
communication protocols:
o SIO / plain text
o MODBUS RTU
4.
Select the required communication protocol
for the RS232 interface and press [ok] to
select.
By choosing the MODBUS RTU as communication
protocol, an "M" icon appears at the right bottom of
the display.
A.
Data interface front side
A
Data interface: RS232
The description for the data interface can be
found in chapter 3.2 "Connections" on page 15.
Page 77
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