Allen-Bradley MicroLogix 1200 Reference Manual page 332

21-32 Communications Instructions
Publication 1762-RM001C-EN-P
Example 3 - Local Read from a PLC-5
Message Instruction Setup
In this example, the controller reads 10 elements from the target device'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:
Local Data Types Communication Type Target Data Types
(1) (1) <---> read/write
O , I , B, N, L
T <---> read/write
C <---> read/write
R <---> read/write
(1) Output and input data types are not valid local data types for read messages.
O, I, S, B, N, L
T
C
R