Data Interface and Optional Accessories
Page 81
Communication Protocols
The communication with the EFOY Pro fuel cells is possible via the serial
RS-232 data interface. Also a direct modem connection for external con-
trol and observation is possible.
The operation state can be read, operation parameters can be changed or
an external control can be implemented.
Following protocols are supported:
-
SIO / clear text (factory settings)
-
MODBUS RTU
The settings can be changed via the Operating panel OP2:
1.
Press and hold [ok] and [menu] at the same time
for 2 seconds. The expert menu appears.
2.
Press
[
]
to select a submenu “Communica-
tion” 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 RS-232 interface and press [ok] to select.
By choosing the MODBUS RTU as communication pro-
tocol, an icon will be shown on the Info screen.
8.2.1
Modbus RTU
The EFOY Pro fuel cell enables a MODBUS RTU communication via the RS-
232 data interface.
Following parameters are set for the MODBUS RTU protocol:
Baud rate: 9600
Data bits: 8
Party: Even Parity
Stop bits: 1
Display in Operating panel OP2: 9600 8,E,1
The parameters can be changed on demand via Operating panel OP2, PC
or Laptop.
