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This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. The specification misses an instruction on how to compute the 'BCC' checksum ('Byte Character Control'). DIASER is a protocol for communication with traffic lights controllers used in France. This document defines the manner in which to calculate the checksum for the protocol DIASER. The checksum in DIASER/UDP/IP is a XOR without STXĭraft-petrescu-ipwave-diaser-checksum-00 Abstract You may also find an example on the downloadable examples from UniLogic Help menu.The checksum in DIASER/UDP/IP is a XOR without STX IPWAVE Working Group You can find more information regarding this subject on the UniLogic help file under: Home>Protocols: 3rd Party The maximum buffer of data that can be send/received is according to TCP/IP protocol -1024 bytes. The CPU can simultaneously support up to 32 TCP server/client and UDP sockets.Ĥ. Each Server can handle up to 16 simultaneous connections.ģ. You can define up to 4 TCP Servers that are dynamic in nature. IP used for TPC/IP server or client is the CPU IP.Ģ.For TCP/IP you'll use the Ethernet port.Note that in this case the USB to serial converter must work with Prolific drivers. For RS232 communication you may use the RS232 serial port of a Uni-COM module or connect a USB to serial converter to the USB host port.For RS485 communication you may use the serial port of the CPU or a RS485 of a Uni-COM module.Each group uses the same properties, which includes STX, ETX, and CRC options. It is possible to configure the UniStream PLCs to talk to 3rd party devices such as: frequency converters, RFID cards readers, bar-code readers, and printers with as long as they have proprietary protocol over serial RS232/RS485 or TCP/IP and you know the structure of this protocol.įor this you will use the COM Rx/Tx, TCP Rx/Tx functions and the protocol functions together with the Message Composer to build messages.