Allen-Bradley micrologix 1500, User Manual

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1 Publication 1764-UM001A-US-P
Chapter
4
Communication Connections
This chapter describes how to set up communications for your control system. The
method you use and cabling required depend on your application. This chapter
also describes how the controller establishes communication with the appropriate
network. Topics include:
•
Default Communication Configuration
•
Communications Toggle Push Button
•
Connecting to the RS-232 Port
•
Connecting to a DH-485 Network
•
Connecting to DeviceNet
Default Communication
Configuration
The MicroLogix 1500 has the following default communication configuration.
For more information about communications, see Understanding Communication
Protocols on page E-1.
Table 4.1 DF1 Full-Duplex Configuration Parameters
Parameter Default
Baud Rate 19.2K
Parity none
Source ID (Node Address) 1
Control Line no handshaking
Error Detection CRC
Embedded Responses auto detect
Duplicate Packet (Message) Detect enabled
ACK Timeout 50 counts
NAK retries 3 retries
ENQ retries 3 retries
Stop Bits 1
NOTE
The default configuration is present when:
•
The controller is powered-up for the first time.
•
The communications toggle push button specifies default
communications (the DCOMM LED is on).
•
An OS upgrade is completed.
AB Spares