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Download Mounting and Operating Instructions EB 5477 EN
Transcript
Communication GNDTD DTR DCD RD RTS RS 232 TA TB RB RA RS 485 Fig. 27 · Pin assignment RS-232-C and RS-485 9.1 RS-232-C serial interface The system bus connection is located on the back of the controller casing (RJ12 jack). A controller can either be directly connected to a serial PC interface (point-to-point connection) or to dial-up modem. In the case, the controller is connected to the telecommunications network, a dial-up modem is required. The controller works autonomously and can trigger a call to the building control station in case of a fault. When the modem function is active, a call to the control station is triggered as soon as the status of the status register (FSR) changes. After communication has been established with the control station and it has read the FSR, the function in the controller to trigger a call is reset. In the case when the control station does not respond to the station address, connection is cancelled by the controller after the time Modem-timeout to has elapsed. If the connection to the control station is disrupted, the alternative number is dialed after the controller has attempted to redial the control station unsuccessfully by number of times set under An. In special cases, the Blocking modem dialing function can be selected to prevent a call being made when a fault occurs. The building control station can also be informed when a previously reported fault no longer exists with the Dialing also when fault no longer exists function. Functions WE Configuration Modem operation OFF Fb44 = ON 30 min 5 min 5 min PULS – 8 bit/16 bit addressing Cyclic initialization In* / 0 to 255 min Modem dialing interval PA* / 0 to 255 min Modem timeout to* / 0 to 99 min Dialing procedure / PULS, ton Phone number GLT* 80 EB 5477 EN
