500-Series Communication Cards
The 500-Series Communication Cards support
either serial or dial-up communications between a
FloBossTM 503, 504, or 553 Flow Manager, and
another device, typically a host computer. They
support Spontaneous-Report-By-Exception (SRBX)
messaging to a host.
Three types of communication cards are available:
either serial or dial-up communications between a
FloBossTM 503, 504, or 553 Flow Manager, and
another device, typically a host computer. They
support Spontaneous-Report-By-Exception (SRBX)
messaging to a host.
Three types of communication cards are available:
- EIA-232D (RS-232D) card for asynchronous EIA-232 serial communications over twisted-pair lines of up to 15 m (50 ft) in length. Under control of the FloBoss 500 unit, this card has the ability to switch external power to communication devices up to 3.5 A, such as a radio, to conserve power.
- EIA-485 (RS-485) card for asynchronous EIA-485 serial communications over twisted-pair lines of up to 1220 m (4000 ft) in length.
- Dial-Up Modem card for sending and receiving signals over a 2-wire, full-duplex telephone network (PSTN) at 1200 and 2400 baud.
Both auto-dial and auto-answer features are accommodated.
Either a serial or modem communication card can be installed in a FloBoss 503 or 504 unit. Only a serial communication card can be installed in a FloBoss 553 unit, due to its Class I, Division 1 rating.
Each communication card plugs into the main board of the FloBoss unit, which provides power and control signals. The communication cards have LED indicators for the various communication signals.
Electrical connections to an external device are made by means of screw terminals on the serial cards.
The dial-up modem card interfaces to a telephone network through a TELCO (RJ11) connector on the card