Description of ChemWeb Server
COM 1 - RS232 null modem
This RS232 port is used for modem parameterization and null modem operation without having to disconnect the device from its application environment.
Terminal No.: | Designation: | Description: |
30 | GND | Ground |
31 | CTS | RS232 signal CTS |
32 | RTS | RS232 signal RTS |
33 | RXD | RS232 signal RXD |
34 | TXD | RS232 signal TXD |
35 | GND | Ground |
Ethernet / 10BaseT (RJ45)
With this connection the ChemWeb Server can be linked with 10Mbit/s to a network or directly to the network board of a PC. For connection with a network switch or hub, a standard patch cable has to be used. A direct connection to a PC network board only works when using a crossed network cable.
Telephone line (only for analog or ISDN version)
The connection to the telephone network (analog modem or ISDN) can be made either via the screw terminals or the RJ45 socket. Both connection methods are equally good.
Terminal No.: | Designation: | Description analog: | Description ISDN: |
20 | LA1 | S0 bus line B2 | |
21 | LA | Telephone line A | S0 bus line B1 |
22 | LB | Telephone line B | S0 bus line A1 |
23 | LB1 | S0 bus line A2 |
Outputs
The ChemWeb Server has two relay outputs. Relay output 1 indicates the online status of the modem, i.e.: it is activated as soon as an Internet connection exists. Relay output 2 can be activated or deactivated via page frame “Server Setup” ==> “Server Commands” by means of button “Relay 2”.
Terminal No.: | Designation: | Description: |
24 | REL 2 | Relay 1 – make contact |
25 | REL 2 | Relay 1 - Common |
26 | REL 2 | Relay 1 – break contact |
27 | REL 1 | Relay 2 – make contact |
28 | REL 1 | Relay 2 - Common |
29 | REL 1 | Relay 2 – break contact |
The CF card must always be inserted before switching on the ChemWeb Server and must never be removed during operation! The CF card must also contain the firmware of the ChemWeb Server. It is not possible to operate the ChemWeb Server with a blank CF card!
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