EMIS Interface Description - Measurement Solutions

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Specification Euro Interface EMIS Interface Description 4.5 PRN – (Printer) Sening® Innovative Tank Truck Systems � Connecting a printer to an EMIS always makes sense when the idea is for one or several MultiFlows and an OBC to collectively access a printer. � Before using this printer, a check should therefore firstly be made from each device to see if the printer is available. This is done through the “PRN,STATUS,Mode“ variable which must have the “READY“ value. � Setting these variables with “OBC“ reserves the printer for the OBC. � The data at the printer interface is actually outputted by setting the “Text“ or “Hex“ variable. Characters or character sequences written into one of these two variables are directly passed onto the printer interface. � With the printing over, “PRN,STATUS,Mode“ is to be reset to “READY". The reservation is thus ended. Multiflow reserves the printer, if required, in a similar way. � The CAN bus accesses the “PRN,STATUS,Mode“ variable by means of “METER“. � As some of the multiflow data is calibration-relevant, the output is one proceeding directly to the printer. EMIS connects its output driver to the printer for the duration of the meter printer reservation under high ohm conditions. PRN-Variablen Zugriff Länge STATUS SETUP Text Hex LastError See table Chapter 5 / page 51 R 50 Mode “READY“, “OBC“, ”METER“ or “ERROR“ R/W 10 Port “NONE“ or “COM(1)“ R/W 15 ReInit Setting the variable (any content) outputs the ReInitstring and thus the printer is initialised. The indicated ASCII character sequence is directly W 15 outputted. Only printable ASCII characters are authorized. The indicated ASCII character sequence is outputted in the HEX format. Is needed for outputting control W 220 characters. (Example: ..,Hex=“0D“ >> Output 0DHex Carriage Return) W 220 Comments: • Under SETUP,Port, the “printer functionality" must firstly be assigned to a serial interface (usually COM(1)) or it can be deactivated with “NONE“. • The SET,PRN telegrams ( from EMIS to the OBC) are only confirmed when all the data has been transferred to the printer. • The printer can use XON / XOFF to control the data flow. There is no other feedback from the printer. • When an error occurs during data transfer, EMIS again takes over the printer interface. It needs to be re-requested ! 46 Rev. 2.00 / MB / jp / Juli 2008 MNF19002EUS / DOK-411E
Sening® Innovative Tank Truck Systems Specification Euro Interface EMIS Interface Description • There is further scope to output control characters from Software version 3.12. In accordance with the char constant Depiction of the C Programming Language, binary data in assocation with a backslash ( \ ) can be outputted directly through the “Text“ variable. • SET,PRN,Text=“ABC\\\”\n\r\x1B123\0” outputs ABC\“ 0AHex 0D Hex 1BHex 123 00Hex thus 12 characters. The following are supported - \0 \a \b \f \n \r \t \v \“ \’ \\. for instance,\x10 indicates the two characters following \x as being hexa-decimal figures and transformed into a hex value. • Octal transformation is not supported. Althought this makes the Hex variable superfluous, it continues to be supported for compatibility considerartions. Supported backslash characters: Zeichenfolge HEX-Format Bezeichnung \0 0x00 Null \a 0x07 Bell \b 0x08 Backspace \f 0x0C Form Feed \n 0x0A Line Feed \r 0x0D Carriage Return \t 0x09 H-Tabulator \v 0x0B V-Tabulator \“ 0x22 doppeltes Hochkomma \’ 0x27 Einfaches Hochkomma \\ 0x5C Backslash Example for outputting a text onto a printer: Direction Telegramm EMIS SET,PRN,STATUS,MODE=”OBC” OBC EMIS SET,PRN,Text=”Testausgabe\r\n” OBC OBC OBC EMIS SET,PRN,Text=”2. Zeile\r\n” OBC OBC OBC EMIS SET,PRN,STATUS,MODE=”READY” OBC MNF19002EUS / DOK-411E Rev. 2.00 / MB / jp / Juli 2008 47 1 2 3 4 5 6 7 8 9 A Variablendefinition
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