Promag CON-485 Series Operations Instructions download pdf (Page 57)

Memo-Graph S 5 Operation / adjusting device settings - Set-up to commissioning

Endress+Hauser 57

5.9.4 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.

Note!

Data transmission between an analogue modem and an ISDN terminal is not possible.

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:

Figure 6: Cable assihnment modem

Note!

The modem's original cable can not 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 (normally included with the modem) original modem cable.

The first connection to the receiver is made as follows:

In the PC software, select “Display/change device settings - 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”.

5.10 Set up Ethernet connection via internal interface

Before a connection can be established via the PC network, the system parameters in the device

must be set.

SUB-D nine pin device SUB-D nine pin modem

SUB-D nine pin device SUB-D 25-pin modem

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Promag CON-485 Series Operations Instructions Page 57