Allen-Bradley MicroLogix 1400 - Page 429

Publication 1766-RM001A-EN-P - October 2008
Communications Instructions 427
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
In this example, the controller reads five elements (words) from the target
device’s (Local Node 2) CIF file, starting at word 20 (or byte 20 for
non-SLC 500 devices). The five elements are placed in the controller’s
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 <---> read/write ST
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