Rockwell Automation Allen-Bradley Compact 5000 Series - DH-485 Data Exchange

68 Rockwell Automation Publication 5069-UM003B-EN-P - January 2020
Chapter 3 Compact 5000 I/O Serial Module Features
DH-485 Data Exchange
For the DF1 data exchange, the following definitions apply:
• Write—the Controller can write data to DH-485.
• Read—the Controller reads data from the DH-485.
Figure 24 - DH-485 Write Command
Figure 25 - DH-485 Read Command
CompactLogix 5380, Compact GuardLogix, 5380 and CompactLogix 5480
MSG Instruction
PLC5 Typed Write
PLC3 Typed Write
PLC2 Unprotected Write
SLC Type Write
Run/Program Mode
Another Protocol
CH0
CIP™ Messaging
Consumed Data
Produced Data
CH1
PCCC Object
DH-485/485CIF
Response
DH-485
PLC5
PLC3
Command with
Write Data
CIP Message Router
EtherNet/IP™
CIP Message
Execute PCCC Object
Heartbeat
5069-SERIAL DH-485
PLC2
SLC5
CompactLogix 5380, Compact GuardLogix 5380 and CompactLogix 5480
MSG Instruction
PLC5 Typed Read
PLC3 Typed Read
PLC2 Unprotected Read
SLC Type Read
Run/Program Mode
Another Protocol
CH0
CIP Messaging
Consumed Data
Produced Data
CH1
PCCC Object
CIP Message Router
Ethernet/IP
CIP Message
Execute PCCC Object
Heartbeat
5069-SERIAL DF1
PLC2
SLC5
Response with
Read Data
Command
DH-485/485CIF
DH-485
PLC5
PLC3