Removing A Module; Connecting Multiple Rs485 Devices - Siemens RUGGEDCOM RX1500 Installation Manual

RUGGEDCOM RX1500
Installation Guide
Section 3.9.2

Removing a Module

Once a module is removed, all the features associated with the module are hidden or disabled in the operating
system.
To remove a module, do the following:
1. Make sure power to the device has been disconnected and wait approximately two minutes for any
remaining energy to dissipate.
2. If the device is installed in a rack, remove it from the rack.
3. Loosen the screws that secure the module.
4. Pull the module from the chassis to disconnect it.
1
2
3
Figure 52: Installing a Module
1. Module 2. Chassis
5. Install a new module or a blank module (to prevent the ingress of dust and dirt). For more information, refer
to Section 3.9.2, "Removing a
6. If necessary, install the device in the rack.
7. Connect power to the device.
Section 3.10

Connecting Multiple RS485 Devices

Each RS485 port can communicate with multiple RS485 devices by wiring devices together in sequence over a
single twisted pair with transmit and receive signals on the same two wires (half duplex). For reliable, continuous
communication, adhere to the following guidelines:
• To minimize the effects of ambient electrical noise, use shielded cabling.
• The correct polarity must be observed throughout a single sequence or ring.
• The number of devices wired should not exceed 32, and total distance should be less than 1219 m (4000 ft) at
100 kbps.
• The Common terminals should be connected to the common wire inside the shield.
Removing a Module
3. Screw
Module".
Chapter 3
Communication Ports
31