Endress+Hauser Digital Recorder eco-graph c Betriebsanleitung Seite 110

Operation / set-up
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110
Caution!
When using an RS232/RS485 converter, ensure that it supports automatic changeover
between "sending" and "receiving" (e.g. W+T type 86000).
5.11.2 Commissioning a modem link
In principle, any conventional modem with AT command set can be used for data
transfer between your device with RS 232 interface and the supplied PC software.
Modem at device
The modem, which is later connected to the device, must be initialised once with the PC
software (Miscellaneous - Preparing modem for device). The modem is, therefore,
connected to the PC with its original cable (normally enclosed with every modem).
Initialisation must be carried out with the same data format (baudrate, data bits, parity)
with which the measuring device works.
After successful initialisation, the modem is connected to the device with a special
(zero) modem cable.
Only three cables are required (TxD, RxD, GND).
Cable assignment:
Note!
The modem's original cable cannot be used for this because the device and the modem
have the same pin assignments at the interface plug.
Modem at PC
The modem, which works from the PC, does not have to be initialised. Connection to the
PC is made with the original modem cable (normally included with the modem).
The first connection to the receiver is made as follows:
• In the PC software, select "Display/change unit set-up - Add new device"
• Select device, set interface parameters manually (COM, baudrate, number of data
bits, parity)
• Activate modem operation - Set up modem
• Enter receiver's telephone number.
• OK
• Now enter the telephone number under which the device connected by modem can
be reached and start the connection with "OK".
Unit SUB-D 9-pin
2
2
5
Unit SUB-D 9-pin
2
2
5
Fig. 34: Modem cable assignment
5.11.3 Connecting a device to the Ethernet (TCP/IP)
In principle, all devices equipped with an internal Ethernet interface can be integrated
into a PC network (TCP/IP Ethernet).
The device(s) can be accessed by any of the PCs in the network using PC software.
There is no need to install driver software ("COM redirection") on the PC because the PC
software has direct access to the Ethernet.
The system parameters "IP address", "Subnet mask" and "Gateway" are input directly at
the device.
modem SUB-D 9-pin
2
3
5
modem SUB-D 25-pin
2
3
5
Digital Recorder