Siemens SIWAREX WP251 Manual page 10

Table of contents
11 Communication with SIMATIC S7-1200 ............................................................................................... 185
11.1 Integration in SIMATIC S7-1200 .......................................................................................... 185
11.1.1 General information ............................................................................................................. 185
11.1.2 Creating the hardware configuration .................................................................................... 186
11.1.3 Calling of function block ....................................................................................................... 188
11.1.4 Working with the function block ........................................................................................... 189
11.1.5 I/O interface of function block .............................................................................................. 191
11.1.6 Error codes of function block ............................................................................................... 192
11.2 Communication via Modbus ................................................................................................. 193
11.2.1 Introduction .......................................................................................................................... 193
11.2.2 Principle of data transmission .............................................................................................. 193
11.2.3 Data record concept ............................................................................................................. 194
11.2.4 Command mailboxes ........................................................................................................... 195
11.2.5 Reading registers ................................................................................................................. 195
11.2.6 Writing registers ................................................................................................................... 196
12 Operation requiring official calibration ................................................................................................... 197
12.1 Preparing for calibration ....................................................................................................... 197
12.1.1 Calibration set ...................................................................................................................... 197
12.1.2 Scale design ......................................................................................................................... 197
12.1.3 Installation and parameter assignment of the calibratable SecureDisplay main display
in the HMI ............................................................................................................................. 197
12.1.4 Parameterization of the scale .............................................................................................. 198
12.1.5 Adjustment and preliminary checking of the scale ............................................................... 198
12.1.6 Calibration label ................................................................................................................... 198
12.2 Verification ........................................................................................................................... 198
12.2.1 Checking of parameters relevant to the verification............................................................. 198
12.2.2 Checking of parameters relevant to the device ................................................................... 200
13 Technical specifications ....................................................................................................................... 203
13.1 Technical specifications ....................................................................................................... 203
13.2 Electrical, EMC and climatic requirements .......................................................................... 207
13.3 Approvals ............................................................................................................................. 211
14 Accessory ............................................................................................................................................ 213
A ESD guidelines .................................................................................................................................... 215
A.1 ESD Guidelines .................................................................................................................... 215
B List of abbreviations ............................................................................................................................. 217
B.1 List of abbreviations ............................................................................................................. 217
Index ................................................................................................................................................... 219
Tables
Table 6- 1 Connection of the 24 V supply ..................................................................................................... 30
Table 6- 2 Load cell connections on the module ........................................................................................... 31
Table 6- 3 Connection of the digital outputs .................................................................................................. 35
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SIWAREX WP251
Manual, 12/2015, A5E37203357A