Spectrum 1762sc-OF8, Руководство пользователя

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Chapter 3: Configuring the 1762sc-OF8 for RSLogix 500 3-5
User’s Manual Pub. 0300246-01 Rev. C
Table 3-1 (Normal Mode/Command Mode)
Output File
Output
Word Normal Run Mode Command Mode
O:e.0 Channel 0 Data Word Command
O:e.1 Channel 1 Data Word Data Word 1 (Ch0 & 1)
6
O:e.2 Channel 2 Data Word Data Word 2 (Ch2 & 3)
6
O:e.3 Channel 3 Data Word Data Word 3 (Ch4 & 5)
6
O:e.4 Channel 4 Data Word Data Word 4 (Ch6 & 7)
6
O:e.5 Channel 5 Data Word Fixed Word 1 (0×CDEF)
O:e.6 Channel 6 Data Word Fixed Word 2 (0×FEDC)
O:e.7 Channel 7 Data Word Fixed Word 3 (0×5A5A)
Once the module detects the transition from Program to Run it waits until the
Fixed Words and Command code are set to valid values. The first command
must be Unlock. If an error is detected, a non-zero response will be placed in the
Response Code (see Input Data File table).
Keep in mind the module is constantly polling the output file as it is updated by
the controller. The module will validate each command using the following three
step process:
1. Validate Fixed Words 1-3 :
These words must always be valid during Command Mode. An error
will be posted in the Response Code until these are correct. Commands
will not be validated and processed until these words are set correctly.
The fixed words are posted above in Table 3-1.
2. Validate Command :
If the Fixed Words are valid, the Command word will be checked. If it is
not set to a valid command, an error will be reported. Initially the
module only checks for the Unlock command. After the Unlock
command is detected, the module must detect a transition in the
Command word to trigger a new command. The available commands are
listed in the table below.
6
See Table 3-3 (Data Words 1 through 4)