WAGO 750-464 Manual

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WAGO 750-464 Manual Manual pdf 44 page image

44 Commissioning WAGO-I/O-SYSTEM 750750-464 2/4 AI RTD configurableManualVersion 1.0.1Pos : 87 /Serie 750 ( WAGO-I/O-SYST EM)/In Betrieb nehmen/Parametrier en über Parameter kanal/Parametri eren über Parameter kanal Bes chr eibung 750- xxxx @ 6\mod_1260443515796_21.doc x @ 46980 @ 2334434 @ 1sneaker6.2 Setting Parameters via Parameter Channels6.2.1 IntroductionA common data channel between the application and the I/O module is used toexchange parameter sets acyclically and have them checked by the complex I/Omodule. In order to access via all available interfaces of a fieldbus coupler orfieldbus controller, the parameter channel is mapped to the existing registermodel. Currently, the parameter channel can be operated with the followinginterfaces:• via the control/status byte during the process data exchange• via the 2-byte process data interface (SPS interface)• via the parameter exchange for the corresponding fieldbus systems(e.g. PROFIBUS-DP/DP-V1)• via the asynchronous serial interface of the fieldbus coupler/controller (e.g.,for WAGO-I/O-CHECK, WAGO-I/O-PRO).The parameter channel is mapped via registers 56 and 57 of the correspondingtable or the corresponding channel. The parameter data is stored word by word inregister 56, communication control is done via register 57. The structure forregisters 56 and 57 is described in the following sections.6.2.2 Structure of the Register6.2.2.1 Parameter Data (Register 56)Register 56 contains the parameter data to be read or written. Depending on theaccess type, either the I/O module (read parameters) or the fieldbuscoupler/controller (write parameters) will write data to the register.Table 32: Parameter Data (Register 56)Bit 7 6 6 4 3 2 1 0Parameter PRM7PRM6PRM5PRM4PRM3PRM2PRM1PRM0Bit 15 14 13 12 11 10 9 8Parameter PRM15PRM14PRM13PRM12PRM11PRM10PRM9PRM8PRM0 ... PRM15 Parameter data bit 0 to bit 15