Siemens NAN 67 Series Manual de usuario descargar pdf (Pagina 6)

vi Modbus® RTU Serial Communications User Manual 02/13

Tables

Table 1-1 Communication and Configuration User Manuals __________________________________ 1

Table 2-1 Modbus RTU Message Formats ________________________________________________ 2

Table 2-2 IEEE Floating Point Number Examples in FP B Format _____________________________ 8

Table 3-1 Modbus RTU Function Codes Definitions ________________________________________ 9

Table 3-2 Maximum Number of Object Addresses for Each Instrument Type ____________________ 10

Table 3-3 Maximum Number of Registers Allowable per Request _____________________________ 12

Table 3-4 Request Delay Time* _______________________________________________________ 12

Table 3-5 DR4500 Digital Output Mapping ______________________________________________ 14

Table 3-6 UDC2300/UDC2500/UDC3200/UDC3300 DO Mapping ___________________________ 14

Table 3-7 Herculine Smart Actuators Digital Output Mapping ________________________________ 14

Table 3-8 UDC3500 Digital Output Mapping _____________________________________________ 14

Table 4-1 Modbus RTU Data Layer Status Exception Codes _________________________________ 26

Table A-1 Global Register Map ________________________________________________________ 27

Figures

Figure 2-1 IEEE Floating-Point Data format _______________________________________________ 4

Figure 2-2 IEEE Floating Point Formats __________________________________________________ 8

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Siemens NAN 67 Series Manual de usuario Pagina 6