Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

Publication 1763-RM001B-EN-P - April 2007
376 Communications Instructions
In this example, the controller reads 10 elements from the target’s (Local
Node 2) N7 file, starting at word N7:50. The 10 words are placed in the
controller’s integer file starting at word N7:0. If five seconds elapse before
the message completes, error bit MG11:0/ER is set, indicating that the
message timed out.
Valid File Type Combinations
Valid transfers between file types are shown below for MicroLogix
messaging:
Example 2 - Local Read from a 485CIF
Message Instruction Setup
Local Data Types Communication Type Target Data Types
O
(1)
, I
(1)
, B, N, L
(1) Output and input data types are not valid local data types for read messages.
<---> read/write O, I, S, B, N, L
T <---> read/write T
C <---> read/write C
R <---> read/write R
RTC
(2)
(2) 500CPU write RTC-to-Integer or RTC-to-RTC only.
---> write N, RTC
ST
(3)
(3) MiroLogix 1100 OS Series B FRN 4 or later.
<---> read/write
ST
(3)
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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