Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Publication 1763-RM001B-EN-P - April 2007
404 Communications Instructions
Network Message Example 3:
MicroLogix 1100 Unsolicited Write Message to RSLinx via Ethernet
(OS Series B FRN 4 or later)
Initiating an unsolicited write MSG to RSLinx via EtherNet/IP requires
sending a remote format message that includes Source Link ID and
address, as well as Destination Link ID and address.
The MicroLogix 1100 OS Series B can only send remote ethernet messages
using EtherNet/IP messages. The local version of EtherNet/IP messages
use the 0x4B Execute PCCC service code, whereas the remote version
needs to use the 0x4C Execute DH+ service code.
The remote Ethernet message setup screen works the same as for a
remote DH-485 message. Selecting remote in the selectable local/remote
field shows two new fields: Remote Station Address and Remote Bridge
Link ID
Also, following set up is needed in RSLinx side for MicroLogix 1100
unsolicited MSG communication with OPC client.
• Remote Bridge Link ID 15 (dec)
• Remote Station Address 63 (dec)
• Chan 1 Network Link ID 0
• Source Station Address 0 (always)
There are four steps required to send unsolicited message to RSLinx DDE/
OPC client applications via EtherNet/IP
• Configure a new DDE/OPC topic in RSLinx for unsolicited data.
• Configure Remote Routing Configuration.
• Configure the DDE topic and Item in RSLinx.
• Configure the ML1100 MSG instruction
1. Configure a new DDE/OPC topic in RSLinx for unsolicited data
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Allen-Bradley MicroLogix 1100 Specifications

General

Processor	32-bit
Programming Software	RSLogix 500
Mounting	DIN rail or panel mount
Power Supply	24V DC
Type	Compact PLC
Digital Inputs	12
Digital Outputs	8
Analog Inputs	4 (depending on model)
Analog Outputs	Optional with expansion module
Programming Language	Ladder Logic
Operating Temperature	0 to 55 °C (32 to 131 °F)
Series	MicroLogix