Instruction manual

accQcomm Interface Module
Section 2 Installation and Operation
2-7
Flow Control can be used when the accQcomm is communicating
through a modem, to regulate data transmission so that when
the buffer is full, data flow will halt until enough data has been
read to continue transmitting. To activate this function, check
the box next to Flow Control.
2.3.2 Network Settings In the Address box, enter the IP address you will use to access
your flow data via the Internet, as well as the Subnet mask.
The default IP address is 192.168.1.10, and the Subnet is
255.255.255.0. If you change the IP address, your Subnet may
need to be adjusted.
The IP address is static, meaning it does not change, and must be
manually entered into the Web browser each time you log on (see
Section 2.8 for more information on viewing data on the Web).
To prevent excessive network EMI from interfering with the
accQcomm’s operation, Teledyne Isco recommends placing an
inductor on the accQcomm’s incoming line when connecting via
the Ethernet port. The inductor type recommended is the
Steward #28B2024-0A0, or equivalent, with 2 wire wraps (see
Appendix A for Isco part number).
2.3.3 Modem Connect the modem to the
MODEM 9-pin connector on the front of
the accQcomm. To begin using the modem, check the Use Modem
box at the bottom left of the Communication screen and enter the
command string to initialize the modem. All parameters must be
entered on one line with no spaces.
Note
The command string is sent to the modem at startup. For the
modem to be initialized, you must cycle power on the accQ-
comm.
In the example below, the initialization string instructs the
modem to auto-answer after two rings, and disables DTR line
checking and Flow Control:
Figure 2-6 Activate modem function
If Flow Control is desired, K0 should be replaced by K1.
Note
Teledyne Isco recommends using Creative Labs Modem
Blaster V.92 Serial Modem #DE5621. The sample initialization
string shown above is based on this modem, but may also
work for other modems. If problems occur when using another
modem, the string may need modification.