Allen-Bradley MicroLogix 1000 User Manual

Using the Message Instruction
13–1
13 Using the Message Instruction
This chapter contains information about communications and the message (MSG)
instruction. Specifically, this chapter contains information on:
• types of communication
• what the MSG instruction symbol looks like
• typical execution time for the MSG instruction
• how to use the MSG instruction
• application examples and timing diagrams
Note Only Series C or later Micr oLogix 1000 discr ete contr ollers and all Micr oLogix
1000 analog contr ollers support the MSG instruction.
Message Instruction
Instruction
Purpose
Page
Mnemonic Name
Purpose
Page
MSG
Message
Read/Write
This instruction transfers data from one node to
another via the communication port. When the
instruction is enabled, the message is sent to a
communication buffer. Replies are processed a
t t he
end o
f s can.
13–3
Programming
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive

Allen-Bradley MicroLogix 1000 Specifications

General

Communication Ports	RS-232
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Manufacturer	Allen-Bradley
Category	Controller
Series	MicroLogix
Programming Language	Ladder Logic
Input Voltage	24V DC or 120/240V AC
I/O Points	10 to 32 points
Processor Type	8-bit
Operating Temperature	0…55 °C (32…131 °F)
Processor	8-bit