Weidmuller WI-MOD-E-G Bedienungsanleitung Seite 16
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WI-MOD-E-100 & WI-MOD-E-300 Wireless Ethernet User Manual
WI-MOD-E Manual v1.10 Page 16
DB9 Connector Pinouts
Pin Name Direction Function
1 DCD Out
Data carrier detect –
2 RD Out
Transmit Data – Serial Data Output
3 TD In
Receive Data – Serial Data Input
4 DTR In
Data Terminal Ready -
5 SG
Signal Ground
6 DSR Out
Data Set Ready - always high when unit is powered on.
7 RTS In
Request to Send -
8 CTS Out
Clear to send -
9 RI
Ring indicator -
2.4.2 RS485 Serial Port
The RS485 port provides for communication between the WI-MOD-E unit and its host device
using a multi-drop cable. Up to 32 devices may be connected in each multi-drop network.
As the RS485 communication medium is shared, only one of the units on the RS485 cable may
send data at any one time. Thus communication protocols based on the RS-485 standard require
some type of arbitration.
RS485 is a balanced, differential standard but it is recommended that shielded, twisted pair cable
be used to interconnect modules to reduce potential RFI. It is important to maintain the polarity
of the two RS485 wires. An RS485 network should be wired as indicated in the diagram below
and terminated at each end of the network with a 120 ohm resistor. On-board 120 ohm resistors
are provided and may be engaged by operating the single DIP switch in the end plate next to the
RS485 terminals. The DIP switch should be in the “1” or “on” position to connect the resistor. If
the module is not at one end of the RS485 cable, the switch should be off.
- CAUTION: 2
- DO NOT: 2
- Important Notice 3
- CONTENTS 5
- 1.1 Network Topology 7
- 1.2 Getting Started Quickly 10
- 2.1 General 11
- 2.2 Antenna Installation 11
- WI-MOD-E 14
- 2.3 Power Supply 15
- 2.4 Serial Connections 15
- HOST WI-MOD-E 17
- Voltage-free 18
- 3.1 Start-up 19
- 3.2 Selecting a Channel 21
- 3.3 Default Configuration 22
- 3.5 Network Configuration 27
- 3.6 Ethernet Data 29
- 3.7 Normal Operation 30
- 3.8 Radio Configuration 31
- 3.14 Digital Input/Output 54
- 3.15 ModBus I/O Transfer 54
- 3.16 Socket Routing 59
- 3.18 Remote Configuration 63
- 3.19 Configuration Examples 64
- Chapter Four DIAGNOSTICS 68
- 4.3 Testing Radio Paths 71
- 4.4 Utilities 72
- Appendix A FIRMWARE UPGRADE 79
- Appendix B GLOSSARY 85
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