Rockwell Automation Publication 5069-UM003B-EN-P - January 2020
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Compact 5000 I/O Serial Module Features
Chapter 3
DH-485 Functions
For Example MSG Control Blocks, see
.
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.