CONTREX CX-1200 - Manual (Page 242)

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INTRODUCTION TO
SERIAL COMMUNICATIONS
The CX-1200 can interface with a host computer through a RS-485 Serial Communications Interface (refer
to Figure 2-30, CX-1200 Multidrop Installation, page 2-24). This interface allows the host computer to
perform remote control of the CX-1200, Control Parameter entry, and status or performance monitoring.
This following sections describe the three available interfaces for Serial Communications:
CX-1200 Serial Communications ASCII Data-Link Protocol
(Message Transmission / Response Structures)
CX-1200 Serial Communications ASCII2 Data-Link Protocol
(Message Transmission / Response Structures)
CX-1200 Serial Communications Binary Data-Link Protocol
(Message Transmission / Response Structures)
NOTE: Before you can apply Serial Communications, the CX-1200 must be interfaced with a host computer
through a RS-485 Serial Communications Interface.
The CX-1200 comes factory pre-loaded with default Control Parameters for Serial Communications. These
Control Parameters set up the CX-1200 to accommodate the RS-485 Serial Communications Interface.
Generally, the default settings are suitable for most applications and do not require modification, however,
these default parameters can be modified for your specific application.
All of the other Control Parameters can be modified as well, when communications have been established
through the host computer using the Serial Communications Interface. To configure for Serial
Communications, refer to System Setup - Control Parameters: Device Configure, Serial Communications
section.