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Taylor™ Programmable Controller Interface User’s Guide
Chapter 2 Hardware and Software Requirements
Internal
Switches
SC Controller
PC devices
connected by
either single
or redundant
connections
SC
Interface
Module
Backup
SC Controller
Figure 2-10. SC Controller with Controller Redundancy
SC Controller Serial Ports
The serial ports of an SC Controller Subsystem are provided by the 6204B SC Control Module.
Each SC Control Module has two redundant serial ports that are set up for RS-422/485
communication. If the PC or data highway uses a different protocol, a converter box must be
provided. The maximum baud rate for communication at these ports is 9600.
Serial communications are brought to the 6204B SC Control Module via connections to its
corresponding 6254B Direct I/O Interface Module or 6229B Field Bus Interface Module. Both
interface modules have four male serial connectors on the top portion of their front panels as
shown in Figure 2-11. Connectors 1A and 1B are redundant connectors for port 1; connectors
2A and 2B are redundant connectors for port 2. Each connector has 15 pins with the pin
designation shown in Table 2-7.
2-12
3BUR 000 254R0201