Table of contents
SIWAREX WP241
8 Manual, 04/2014, A5E33713528A
8.25.4 Totalizer 6 (S6) .......................................................................................................................... 134
8.26 DR 34 ASCII main display value ............................................................................................... 135
8.26.1 Content of main display as ASCII string ................................................................................... 135
8.27 DR 38 Process state extended ................................................................................................. 136
8.28 DR 48 Date and time 2 .............................................................................................................. 137
9 Messages ............................................................................................................................................ 139
9.1 Message types .......................................................................................................................... 139
9.2 Message paths .......................................................................................................................... 139
9.3 Evaluating messages with the help of SIWATOOL .................................................................. 140
9.4 Detecting messages with the help of FB SIWA ........................................................................ 140
9.5 Message list .............................................................................................................................. 141
9.5.1 System status message list....................................................................................................... 141
9.5.2 Technology error message list .................................................................................................. 142
9.5.3 Data and operating errors message list .................................................................................... 142
9.5.4 Messages by LEDs on the module ........................................................................................... 144
10 Command lists ..................................................................................................................................... 147
10.1 Overview ................................................................................................................................... 147
10.2 Command lists .......................................................................................................................... 148
11 Communication .................................................................................................................................... 153
11.1 Integration in SIMATIC S7-1200 ............................................................................................... 153
11.1.1 General information ................................................................................................................... 153
11.1.2 Creating the hardware configuration ......................................................................................... 154
11.1.3 Calling of function block ............................................................................................................ 156
11.1.4 Working with the function block ................................................................................................ 157
11.1.5 I/O interface of function block.................................................................................................... 159
11.1.6 Error codes of function block..................................................................................................... 160
11.2 Communication via Modbus ...................................................................................................... 161
11.2.1 General information ................................................................................................................... 161
11.2.2 Principle of data transmission ................................................................................................... 161
11.2.3 Data record concept .................................................................................................................. 162
11.2.4 Command mailboxes ................................................................................................................ 163
11.2.5 Reading registers ...................................................................................................................... 164
11.2.6 Writing registers ........................................................................................................................ 165
12 Technical specifications ....................................................................................................................... 167
12.1 Technical specifications ............................................................................................................ 167
12.2 Electrical, EMC and climatic requirements ............................................................................... 172
12.3 Approvals .................................................................................................................................. 176
13 Accessories ......................................................................................................................................... 177
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