Technical data

WAGO-I/O-SYSTEM 750 Table of Contents 3
750-652 Serial Interface RS-232 / RS-485
Manual
Version 1.3.0
Table of Contents
1 Notes about this Documentation ................................................................. 6
1.1 Validity of this Documentation ................................................................. 6
1.2 Copyright ................................................................................................... 6
1.3 Symbols ..................................................................................................... 7
1.4 Number Notation ....................................................................................... 9
1.5 Font Conventions ...................................................................................... 9
2 Important Notes ......................................................................................... 10
2.1 Legal Bases ............................................................................................. 10
2.1.1 Subject to Changes ............................................................................. 10
2.1.2 Personnel Qualifications ..................................................................... 10
2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with Underlying
Provisions ........................................................................................... 10
2.1.4 Technical Condition of Specified Devices ......................................... 11
2.2 Safety Advice (Precautions) .................................................................... 12
3 Device Description ..................................................................................... 14
3.1 View ........................................................................................................ 18
3.2 Connectors ............................................................................................... 19
3.2.1 Data Contacts/Internal Bus ................................................................. 19
3.2.2 Power Jumper Contacts/Field Supply ................................................ 20
3.2.3 CAGE CLAMP
®
Connectors ............................................................. 22
3.3 Display Elements .................................................................................... 23
3.4 Operating Elements ................................................................................. 24
3.5 Schematic Diagram ................................................................................. 24
3.6 Technical Data ........................................................................................ 25
3.6.1 Device Data ........................................................................................ 25
3.6.2 Supply ................................................................................................. 25
3.6.3 Communication .................................................................................. 25
3.6.4 Interface .............................................................................................. 26
3.6.5 Climatic Environmental Conditions ................................................... 26
3.7 Approvals ................................................................................................ 27
3.8 Standards and Guidelines ........................................................................ 29
4 Process Image ............................................................................................. 30
4.1 Operating Modes for Serial Transmission .............................................. 30
4.2 Data Exchange Mode .............................................................................. 32
5 Function Description ................................................................................. 34
5.1 Operating Modes for Serial Transmission .............................................. 34
5.1.1 Transmit Data ..................................................................................... 34
5.1.1.1 Continuous Transmission .............................................................. 35
5.1.2 Receive Data ....................................................................................... 35
5.1.2.1 Continuous Receipt ........................................................................ 35
5.1.3 RS-232 Operating Mode..................................................................... 36
5.1.3.1 Flow Control Using XON-/XOFF Protocol .................................. 36
5.1.3.2 Flow Control Using RTS/CTS ....................................................... 36
5.1.3.3 Flow Control Using RTS/CTS, RTS with Lead/Follow-on Time . 37
5.1.4 RS-485 Operating Mode..................................................................... 37