Apollo Intelligent Meter Series IMY Manual do Utilizador descarregar pdf (Página 33)

SERIAL COMMUNICATIONS EXAMPLES

CONNECTING TO AN RLC PRINTER

The drawing shows the indicator with the 20 mA Serial Communication

Option set-up with an RLC Model DMPC printer. An external current source

is required to implement the printer’s busy signal to the indicator’s receive

loop, which prevents overruns. The “Print switch” is a momentary contact,

push button type connected between the E2-CON (TBA #8) and the signal

common (TBA #7). The print function and E2-CON must be pro- grammed

and the baud rate must match those of the printer. If a printer is used which

does not have a ‘busy’ line, current must still be flowing

into the indicator’s

receive loop before transmission can occur.

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Apollo Intelligent Meter Series IMY Manual do Utilizador Página 33