Elster EK220, Operating Instructions And Installation Information

Page: 86 / 120

Volume Conversion Device EK220
86 © Elster GmbH
4.4.2 FE230 Function Expansion with modem
F
Connection see Chap. 5.6.2
The FE230 is a battery-powered function expansion with integral modem.
For this application extended parameterization of the device via the optical interface is r e-
quired. Special parameter files are available for this which are installed with the "Win-
PADS" program and which can also be loaded into the device using the program.
After the parameterising process with "Md.S2 = 6", the settings for the read -out time win-
dow should be made under the interface list (
®
3.13).
- Md.S2 = 6 Without modem control. The modem accepts the call automati-
cally. Battery operation is possible. The EK220 controls the mo-
dem and the call acceptance. Num.T is activated.
- Bd.S2 = 19200 Baud rate 19200 Bd
- TypS2 = RS485 Type of interface 2: RS485
- BusS2 = 0
No bus mode.
- Num.T = ... Num.T is not activated.
!
After the parameterisation process particularly the settings for the readout time window
must be adjusted under the interface list (
®
3.13), because the battery service life of
the FE230 crucially depends on them.
4.4.3 Devices with RS485 interface, without modem (also FE260 without mo-
dem)
F
For this applications the EK220 needs an external power supply.
F
Connection see Chap. 5.6.1, page 95.
For the connection of a device with RS485 interface without a modem, the following se t-
tings must be made under the interface list (
®
3.13):
- Md.S2 = 5 No modem control by the EK220, without control signals, baud
rate selection possible
- Bd.S2 = 300 With application of baud rate selection according to IEC 62056-21
(procedure as for the optical interface)
1
or = 19200 Baud rate selection bypassed
- TypS2 = RS485 Type of interface 2: RS485
- BusS2 = 0 No bus mode.
4.4.4 EK220 connected to RS485-Bus (real RS485)
F
For this applications the EK220 needs an external power supply.
F
Connection see Chap. 5.6.1, page 95.
1
The set baud rate is only used briefly for initiating the data interchange. The actual baud
rate for transmitting the useful data is increased automatically to 9600 Bd.