Instruction manual

ControlWave Micro Instruction Manual (CI-ControlWave Micro)
2-34 Installation Revised Jun-2013
also clock DTE/DCE serial data into (transmit) or out of (receive) the
modem at rates up to 115.2 kHz.
The factory supplies the modem pre-installed or in kit form with all
required hardware. You install it on the ECOM1 module and then use
the Ports page in the Flash Configuration utility (in NetView,
LocalView, or TechView) to assign ports. Configure a profile for the
modem using AT commands submitted using a terminal emulation
program (such as HyperTerminal). Users typically use AT commands
only when checking the modem’s active or stored profile or when
reconfiguring a modem (to turn auto answer on or off, etc.).
Prior to shipment from the factory, the MultiTech modems are pre-
configured using the following steps:
1. Connect pin Enable modem setup by setting jumper JP2 on the
ECOM to 2-3.
2. Connect via HyperTerminal (Parameters = 9600, 8, N, 1, None)
to ECOM port C1 using the null modem cable (see Figure 2-17).
3. Send Factory Default = AT&F0
4. Disable Flow Control = AT&K0
5. Set baud rate using AT Command: AT$SB9600, or whatever
baud rate you require.
6. Write to Memory. = AT&W
7. Disable setup mode. Park JP2 (no connection)
Note: You can reconfigure the modem using AT commands and a
terminal program (like HyperTerminal). Connect pins 2 and 3 of
JP2 with a suitcase jumper, and use a null modem cable (see
Figure 2-17) to connect the PC to the modem (COM4 or
COM8).
PSTN
Connections
Figure 2-27 shows a publicly switched telephone network (PSTN)
using a single master and three remote ControlWave Micros (each
equipped with a PSTN modem). This application requires only one
remote connection.
Use a cable with standard telephone connectors (RJ11s) on each end.
Plug one end of the cable into the RJ11 connector jack on the ECOM
and the end into a RJ11 wall jack. The telephone company provides the
necessary subscriber loops at its central system along with the phone
numbers for each destination.
Caution
Connect only one modem on each drop. If you attempt to parallel two or
more modems across a single drop, an impedance mismatch occurs,
adversely affecting the signal. Modems cannot provide reliable
communications under these conditions.