ABB 07KT92 Power Supply Connector Module

Description

The processing of the PLC program has higher priority than the communication via the serial interfaces. The PLC operates the receiving direction of the serial interface COM1 with interrupt-control. During a running PLC program cycle incoming characters respectively trigger an interrupt impulse, which interrupts the running PLC program until the received characters are stored in the reception buffer. To avoid a permanent interruption of the program processing, the PLC controls the data reception via the RTS line so that it takes place in the breaks between two PLC cycles. The PLC processes the jobs received via COM1 exclusively in the breaks between the PLC program cycles. The output of characters via COM1 is also only conducted in the breaks between two program cycles. The lower the utilization rate of the PLC is, the longer the breaks are between the program cycles and the higher the possible communication rate is to COM1. The synchronization of the data exchange between the control and the connected unit is conducted via the hardware handshake lines RTS and CTS. The PLC blocks data reception via the RTS line under the following limiting conditions: – Reception buffer has reached a certain fill. – A PLC program cycle is just running. The control still reacts during output of characters in addition to the XOFF/XON characters of the connected unit. The control itself does not use these SW handshakes.

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Product Information

1. 100% full New! - Original Factory Seal!    

2. Warranty:12 months in globally!  

3. Package: Original packing with cartons. 

4. Delivery time: Shipped in 1-3 days after payment.