WAGO 750-454 Manual

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WAGO 750-454 Manual Manual pdf 11 page image

750-454 [2 AI 4-20 mA, Differential Inputs] ï 11Process ImageWAGO-I/O-SYSTEM 750I/O ModulesApprovals (cf. Chapter 2.2 of the Coupler/Controller Manual)CULUS (UL508)ABS (American Bureau of Shipping)BV (Bureau Veritas)DNV (Det Norske Veritas) Cl. BGL (Germanischer Lloyd) Cat. A, B, C, DKR (Korean Register of Shipping)LR (Lloyd's Register) Env. 1, 2, 3, 4(only for 750-454, /000-200)NKK (Nippon Kaiji Kyokai)RINA (Registro Italiano Navale) (only for 750-454)CULUS (UL1604) Class I Div2 ABCD T4AKEMA II 3 G EEx nA II T4Conformity MarkingMore InformationDetailed references to the approvals are listed in the document "OverviewApprovals WAGO-I/O-SYSTEM 750", which you can find on the CD ROMELECTRONICC Tools and Docs (Item-No.: 0888-0412)or in the internet under:www.wago.com ! Documentation ! WAGO-I/O-SYSTEM 750 !System Description2.1.1.7 Process ImageThe analog input module 750-454 transmits 16-bit measured values and8 optional status bits per channel.The digitalized measured value is transmitted in a data word (16 bits) as inputbyte 0 (low) and input byte 1 (high) into the process image of the coupler /controller.This value is represented with a 12 bit resolution on bit B3 ... B14.From the manufacturing number |32|02|XX|XX| onwards, the statusinformation included in the three least significant bits (B0 ... B2) can beparsed in the event of an errorBit B0 = 1 is set when the range of measurement is overranged.Bit B0 and B1 = 1 are set in case of measurement range underflow or brokenwire. For modules having a previous manufacturing number, the last 3 bits arenot parsed.