Serial Communications; Serial Communication Via Modem; E Panel Modem Setup Procedure; E Panel Rs232 Cables - Generac Power Systems E Operating Manual

E PANEL MODEM SETUP PROCEDURE

Generac only supports the US Robotics 56k V90
Sportster modem for connection of the "E" Panel
to the phone line. Other modems may work in this
application, but have not been tested by Generac.
1. Set modem Dip switches as shown in Figure 1.2.
Power cycle the modem (turn modem off, then on).
2. Connect the cable between the "E" panel and the
modem (see Figure 1.4).
3. Set the "E" panel for "modem connection and
setup". Power cycle the "E" panel (remove and
relace front panel fuse).
4. In GenLink, select the proper setup string for the
modem at the PC end (not the "E" panel).
Figure 1.2 — US Robotics 56k V90 Sportster
Dip Switch Settings

E PANEL RS232 CABLES

The "E" panel can communicate via its RS232 port to
a remote PC. The connection is made either directly
to the serial port on a PC, or via a modem and tele-
phone line.
The "E" panel has a 9-pin male "D" type connector,
and is configured
Equipment). The serial ports on most PCs also have
a DTE configuration, and are usually 9-pin "D" type
male connectors. Most modems have a DCE configu-
ration (Data Communication Equipment) and a 25-
pin female connector.
Connecting an "E" panel directly to a PC requires a
"Null Modem" connection. This can be achieved with
either a null modem cable, or a standard serial cable
with a null modem adapter. Figure 1.3 shows the
required pin connections between the two cables for
a 9-pin serial connector on the PC.
Figure 1.3 — "E" Panel to PC Cable
Configuration
NOTE:
as DTE (Data Terminal
Section 1 — General Information
E Option Control Panels
Use shielded cable, 100 feet maximum in length.
Connect the shield drain wire to Pin 1 on the E
panel end only.
Connecting the "E" panel to a modem requires a stan-
dard modem cable. The cable supplied with the
modem should work. If a longer cable is required, the
connectors should be wired as shown in Figure 4.
Figure 1.4 — "E" Panel to Modem Cable
Configuration
The modem is not intended to be mounted inside
the control panel. It should be mounted inside the
enclosure (no vibration) or inside a nearby build-
ing or shelter if the generator does not have an
enclosure.
Use shielded cable, 100 feet maximum in length.
Connect the shield drain wire to Pin 1 on the E
panel end only.

SERIAL COMMUNICATIONS

Serial Communication Via Modem

(Also refer to the appropriate Genlink Manual)
The control panel has the ability to communicate to a
PC via an RS232 serial port. The PC software will be
able to interrogate the module. The user also will be
able to program the parameters on the PC and down-
load them to the module if using the Pro version. The
user will be able to start and stop the generator if it is
in AUTO mode.
The module does not have a built-in modem.
However, software will include the ability to interface
with an external modem. The user can initialize the
modem from the panel. Generac offers a remote
annunciator (models #'s 004391-0, 004392-0 and
004391-1, 004392-1) which allows the E panel to
communicate with both a modem and a remote
annunciator. See the Remote Annunciator Panel man-
ual (part number 0A7450) for a complete description
of these panels.
Generac
NOTE:
NOTE:
NOTE:
® Power Systems, Inc. 9