Rockwell Automation Publication 5069-UM003B-EN-P - January 2020 69
Compact 5000 I/O Serial Module Features Chapter 3
DH-485 Functions
For Example MSG Control Blocks, see page 147.
Table 19 - DH-485 Configuration Parameters
Parameter Definition Available Options
Station Address Station address of the channel. • 0…31
Max Station Address Specifies the maximum station address of all devices on the
DH-485 network.
• 0…31 (default = 31)
Token Hold Factor Number of transmissions plus retries that a node holding a token
can send onto the data link each time that it receives the token.
•1…4 (default = 1)
Error Detection Detects error protocols. • 0 = BCC
• 1 = CRC (default)
Enable Duplicate Detection When enabled, duplicate messages are acknowledged and
discarded.
• 0 = Disabled (default)
•1 = Enabled
IMPORTANT DF1 and DH-485 protocols use channel 1 only and must be local.
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