Introduction

The CTI 2500-RIO-A RS485 Remote Base Controller is a member of Control

Technology’s family of I/O modules compatible with programmable controllers

from Siemens® and CTI.

The 2500-RIO-A RS485 Remote Base Controller (RBC) allows a 2500 Series™

I/O base to function as a remote base. The 2500-RIO-A is intended to be a

replacement for the Siemens® 505-6851-A RBC. It provides the following

functions:

• Compatible with CTI 2500 Series™ and Simatic® 505® CPUs.

• Can be used in currently-available CTI and Siemens® 4. 8. 11. and 16-slot

bases

• Supports communication speeds 1Mbits/sec and maximum cable distance

of 1000 meters

• LED display which shows error and status codes

• Front panel thumbwheel switch for setting the station address

• On-board RS232 port which can be used for PLC programming and

configuration.

The 2500-RIO-A resides in 2500 Series™ base. It installs in the second slot

from the left, adjacent to the power supply module. When used in a

2500-R11-A Redundant Base, two 2500-RIO-A units can be installed

in the third and fourth slots from the left, adjacent to the second power

supply.

Do not install this module into a normal I/O slot, as damage can occur.