ABB Module DSTC454 5751017-F ABB DSTC454 5751017-F DSTC 454 MODEM FIELDBUS Free shipping

ABB Module DSTC454 5751017-F ABB DSTC454 5751017-F DSTC 454 MODEM FIELDBUS Free shipping

Product Description:

While a communication between the DRUCK or EMAS blocks and a device connected to COM1 is being executed, it may be come necessary to modify the program, for example. For this purpose, you must switch over COM1 from the passive mode into the active mode. Switch-over: Passive mode ––> Active mode There are three possibilities for switching over:Set the RUN/STOP switch to the "STOP"positionThe latter option has the advantage that the switch-over can also be controlled remotely, e.g. via telephone line and suitable dial-up modems. The ASCII character  has the decimal code of 127 and the hexadecimal code of 7FH. You can generate this character by simultaneously
pressing the control key <CTRL> and the delete key <--.Notes: On German keyboards the control key is labelled by

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For the passive mode of COM1, the interface parameters can be changed using the SINIT function block. If the changed values are not plausible, the COM1 interface uses the default values.
The interface is newly initialized each time the operating mode is switched over.
The active mode parameters are set in the active mode, whereas in the passive mode the parameters established by the SINIT block or the default values are set.The serial interface COM2 is only suitable for the passive mode. In addition, it can be operated as a MODBUS interface.The passive mode is used to perform a communication configured with the DRUCK and EMAS blocks between the user program and a device connected to the serial interface. The application-specific initialization of COM2 can be performed
using the SINIT function block.

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