Rockwell Automation 5720 DriveLogix System - Manual (Page 205)

Publication 20D-UM002C-EN-P - November 2003
Communicating with Devices on a Serial Link 9-11
Configuring a DF1 slave station
Configuring a DF1 master station
This field: Description:
Station address The station address for the serial port on the DF1 slave.
Enter a valid DF1 address (0-254). Address 255 is reserved for broadcast messages. The default is 0.
Transmit retries The number of times the remote station retries a message after the first attempt before the station declares
the message undeliverable.
Enter a value 0-127. The default is 3.
Slave poll timeout Specifies the amount of time the slave station waits to be polled by a master before indicating a fault.
Enter a value 0-32767. Limits are defined in 20ms intervals. The default is 3000 (60,000ms).
EOT suppression Select whether or not to suppress sending EOT packets in response to a poll. The default is not to suppress
sending EOT packets.
Error detection Select BCC or CRC error detection.
Configure both stations to use the same type of error checking.
BCC: the controller sends and accepts messages that end with a BCC byte for error checking. BCC is quicker
and easier to implement in a computer driver. This is the default.
CRC: the controller sends and accepts messages with a 2-byte CRC for error checking. CRC is a more
complete method.
Enable duplicate
detection Select whether or not the controller should detect duplicate messages. The default is duplicate
detection enabled.
This field: Description:
Station address The station address for the serial port on the DF1 master.
Enter a valid DF1 address (0-254). Address 255 is reserved for broadcast messages. The default is 0.
Transmit retries Specifies the number of times a message is retried after the first attempt before being declared
undeliverable.
Enter a value 0-127. The default is 3.
ACK timeout Specifies the amount of time you want the controller to wait for an acknowledgment to its message
transmission.
Enter a value 0-32767. Limits are defined in 20ms intervals. The default is 50 (1000ms).
Reply message wait Message-based polling mode only
Specifies the amount of time the master station waits after receiving an ACK to a master-initiated message
before polling the slave station for a reply.
Enter a value 0-65535. Limits are defined in 20ms intervals. The default is 5 (100ms).