Veeder-Root TLS-50 Series, Руководство пользователя

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RS-232 Communications
The RS-232 port, provided with consoles having form numbers 8469X0-260, -230, and -460, connects to a user-
selected serial printer, modem or terminal.
RS-232 Peripheral Equipment Requirements
Any peripheral equipment connected to an RS-232 serial port must meet the following criteria:
1. Peripheral equipment must be UL listed.
2. The equipment must have an EIA standard RS-232C or RS-232D communications protocol.
3. The equipment must NOT be installed over or in a hazardous location.
RS-232 Connections
TO A DEVICE LESS THAN 50 FEET FROM THE CONSOLE
Veeder-Root recommends that you use a null-modem cable no longer than 50 feet for direct connections between
the console and a remote device. Cable runs longer than 50 feet can result in data errors, component damage, or
both.
TO A DEVICE MORE THAN 50 FEET FROM THE CONSOLE
If cable runs longer than 50 feet are needed, two short-haul modems should be used, one at the console and one
at the remote device. We recommend an asynchronous short-haul modem, Black Box model ME800A, or
equivalent at the console and at the remote device. For more information, you can contact Black Box by phone:
724-746-5500, Fax: 724-746-0746, or web:
http://www.blackbox.com
Figure 18 illustrates how to connect two short-haul modems between the console RS-232 Interface Module’s or
Auxiliary RS-232 Interface Module’s DB-25 connector and the remote device.