Siemens Server - Manual (Page 11)

Overview of ChemWeb Server
5
CompactFlash slot (CF)
The CompactFlash slot is used as memory for programs and data and can operate commercial
CompactFlash cards with corresponding driver software as external drive. For this purpose, the card
should be formatted with the FAT file system. It is possible to use CF cards with a capacity of 64, 128
or 256MB.
LED displays
Versions: serial / analog modem / ISDN modem
Power (green) Device is ready-to-operate / supply voltage applied
OH (yellow)
Modem has gone off-hook and set up a connection to the telephone
network
DCD (yellow) Data connection is established
COM 1 RxTx (green)
Activity on Receive/Transmit data lines to RS232 parameterization port
(COM 1 – null modem) or to internal modem
W&T bus RxTx (yellow)
Activity on Receive/Transmit data lines to RS232/485 application port
(COM 0 - W&T-RS485 / W&T-RS232)
Network (yellow) Activity on network line (Ethernet)
Status (green)
LED lights:
ChemWeb Server in normal operation without malfunction
LED does not light:
ChemWeb Server not working – internal malfunction in program flow
Reset by disconnecting the supply voltage or by pressing the Reset
key for at least 3 seconds.
LED flashes with 1Hz:
Connection and log-in carried out successfully via modem
LED flashes with 2Hz:
Fault at RS485 bus – communication failure
CF Activity (yellow) Activity of CompactFlash slot